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Tonghui TH2518 Operation Manual

Resistance/temperature scanner
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Operation Manual
TH2518/A
Resistance/Temperature Scanner
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Summary of Contents for Tonghui TH2518

  • Page 1 Operation Manual TH2518/A Resistance/Temperature Scanner...

  • Page 2: Table Of Contents

    Content CHAPTER 1 INSTRUMENT INTRODUCTION AND UNPACKING CHECK ..........5 ........................5 NSTRUMENT NTRODUCTION ........................5 NPACKING AND NSPECTION ..........................5 OWER ONNECTION ..............................6 ............................6 NVIRONMENT ............................6 IXTURE ............................6 REHEATING ..................... 6 THER EATURES OF THE NSTRUMENT CHAPTER 2 FRONT AND REAR PANEL DESCRIPTIONS AND INITIAL OPERATION .......
  • Page 3 USBVCOM V ......................40 IRTUAL ERIAL System Configuration ........................40 6.4.1 Installation of Drivers ........................40 6.4.2 CHAPTER 7 TH2518 COMMAND SET ......................42 ..........................42 SCPI C OMMAND DISP Command Set.......................... 42 7.1.1 FUNC Command Set ........................43 7.1.2 APER Command Set ........................
  • Page 4 8.2.1 8.2.2 Scanning Mode ..........................139 Shift Output Timing of Comparison Results for Each Test Channel ............ 140 8.2.3 8.2.4 Electrical Characteristics ........................ 141 -TH2518-01 ................141 HANNEL OMPARISON ORTING OARD 8.3.1 Introduction to Sorting Board ......................141 Sorting Board Ports and Port Description ..................142 8.3.2...

  • Page 5: Chapter 1 Instrument Introduction And Unpacking Check

    1.1 Instrument Introduction TH2518 series application of synchronous plug-in design concept, support for the plug-in board test unit up to 6, and between the plug-in board to achieve synchronous measurement, greatly improving the scanning and measurement speed.

  • Page 6: Fuse

    Chapter 1 Instrument Introduction and Unpacking Check 1.4 Fuse The instrument is equipped with a fuse from the factory, and the user should use the fuse provided by our company. 1.5 Environment Please do not use it under dusty, vibration, direct sunlight or corrosive gas. Instrument working environment conditions.

  • Page 7: Chapter 2 Front And Rear Panel Descriptions And Initial Operation

    Chapter 2 Front and Rear Panel Descriptions and Initial Operation This chapter describes the basic operating procedures of the TH2518 instrument. Before using the TH2518 instrument, please read this chapter in detail so that you can quickly learn the operation of the TH2518 instrument.

  • Page 8: Rear Panel Description

    A 24-bit color 4.3-inch color TFT LCD with touch function and 480 x 272 pixels resolution is used for setting test conditions and displaying measurement results, etc. 2.2 Rear Panel Description Figure 2-2 provides a brief description of the TH2518 rear panel. RATING FUSE...

  • Page 9: Definition Of The Measurement Display Area

    USB communication interface to realize on-line communication with computer. 2.3 Definition of the Measurement Display Area The TH2518 adopts a 24-bit color 4.3-inch color LCD with touch function and its resolution is 480*272. It is divided into two modes as follows: 2.3.1 Stand-alone Mode (Alone)

  • Page 10: Scan Mode (Scan)

    Chapter 2 Front and Rear Panel Descriptions and Initial Operation Main menu area This area indicates the name of the page currently being manipulated. Functional area This area is used to modify the test mode and test parameters. Softkey area This area is used to display the function menu corresponding to the cursor area.

  • Page 11: Main Menu Buttons

    Chapter 2 Front and Rear Panel Descriptions and Initial Operation Scanning mode, scanning display interface, the instrument can be configured to use up to 90 channels for scanning. 16 scanning display channels per page, with this arrow to page through the scanning results, for a total of 6 pages. Display area for scanning results Scanning test results for each test channel.

  • Page 12: Basic Operation

    The software function for which the cursor is currently active is displayed in the "softkey area". Select and press the desired softkey. The TH2518 touch page is easier to operate, just press the corresponding function of the page with your finger and it will work accordingly.
  • Page 13 Chapter 2 Front and Rear Panel Descriptions and Initial Operation Figure 2-7 TH2518 power-up page If the user has enabled the password protection function, the instrument will ask for the power-on password. According to the page display, enter the power-on password and press ENTER to enter the main menu page.

  • Page 14: Chapter 3 Basic Operation

    As shown in the figure, you can set the relevant test parameters and the display of measurement results in this interface, as detailed below: 3.1.1.1 Test Parameter The TH2518 can measure the following parameters: R (resistance) R-T (resistance and temperature)
  • Page 15 Chapter 3 Basic Operation 3.1.1.2 Range TH2518 and TH2518A have 7 DC resistance test ranges: 200mΩ, 2Ω, 20Ω, 200Ω, 2kΩ, 20kΩ, 200kΩ. There are three types of TH2518 temperature tests: Test range of PT100 temperature: -50℃~250℃. Analog temperature test range: 0~2V Testing range of PT500 temperature: -50℃~250℃.
  • Page 16 Figure 3-2 TH2518 Measurement Range Table 3.1.1.3 Measuring Cell The TH2518 supports up to 6 measurement units. In stand-alone (Alone) mode, you can choose to use one of the six test units for stand-alone testing. When the measurement parameter is "R" or "T", "R" or "T" is input from the front panel to measure resistance or temperature.
  • Page 17 Chapter 3 Basic Operation  Demonstrate Switch for measured value display, ON for displaying the measured value, OFF for not displaying.  0 ADJ Indicates whether the base data is valid or not, ON indicates that the base data is valid, and OFF indicates that the base data is invalid.

  • Page 18: Scanning Mode

    Chapter 3 Basic Operation  Save data Pressing this touch key changes this key to SAVE DATA ON, indicating that the current test results are continuously saved to a .CSV file on a USB flash drive for each measurement, or not saved if the user has not previously inserted a USB flash drive. Pressing Save Data ON again changes it back to Save Data OFF, which stops saving data At this time.

  • Page 19: Measurement Settings

    T (TH2518A does not have this feature) 3.2.2 Measurement Speed TH2518 resistance test result data is displayed as 5 digits in decimal floating mode. Temperature test results are displayed in 4 digits with one digit after the decimal point. Touch the speed area and the following menu will be displayed in the soft key area. With the speed setting cursor selected, select the above soft key to modify the setting.

  • Page 20: Adj

    Chapter 3 Basic Operation Front panel START key triggers manual measurement mode  External trigger measurement mode  Bus-triggered measurement mode 3.2.4 0 ADJ Indicates whether the base data is valid or not, ON indicates that the base data is valid, OFF indicates that the base data is invalid.

  • Page 21: Transducers

    Chapter 3 Basic Operation 3.2.9 Transducers Touching the sensor displays the following menu.  PT100  PT500 This function refers to the conversion of the resistance value obtained from testing at the current ambient temperature to the resistance value at the user-set temperature. ...

  • Page 22: Sorting Mode

    Chapter 3 Basic Operation 3.2.10 Sorting Mode Touch Sorting Mode and the following menu is displayed.  OneToOne See section 8.3.  Shift See section 8.3. 3.3 Boundary Settings 3.3.1 Alone Mode Pressing SETUP→<Measurement Setup>→<Boundary Setup> will enter the Alone mode <Boundary Setup>...
  • Page 23 Chapter 3 Basic Operation Select this mode to set both the nominal value and the upper and lower limits. If the set nominal value is 1Ω, the upper limit is 5%, and the lower limit is -3%, then 1× (1+upper limit) is the highest and 1×...

  • Page 24: Channel Settings (Scan Mode)

    Chapter 3 Basic Operation limit, and the rightmost column is the lower limit. Touch the corresponding change area and enter a numeric key to make the change. 3.4 Channel Settings (Scan mode) When the measurement mode is Scan, press SETUP→<Parameter Setting>→<Channel Setting>, it will enter the Scan mode <Channel Setting>...

  • Page 25: Junction Box And Scanning

    Chapter 3 Basic Operation 3.5 Junction Box and Scanning 3.5.1 Junction Box (accessory) Inside each junction box are four terminal blocks, each with four user-selectable channels T01-T16 that can be freely combined. Theoretically, any channel can be combined with any of the other 15 channels in addition to itself. The layout of the terminal block is shown in Figure 3-9: Figure 3-9 Terminal Block Layout When wiring the terminal block, note that the wiring is based on the scanning channel...

  • Page 26: Chapter 4 System Settings And File Management

    Chapter 4 System Settings and File Management Chapter 4 System Settings and File Management 4.1 System settings Press the key SYSTEM or press System Setup in the main menu display area of the touch page to enter the <System Setup> interface. As shown in Figure 4-1: Figure 4-1 System Setup Interface 1 This page is used to set the measurement mode, touch tone, system language, password setting, bus mode, baud rate, power supply frequency, Handler power supply, and shift...

  • Page 27: Password

    Chapter 4 System Settings and File Management Used to select the English operation interface.  Chinese Used to select the Chinese operation interface. Press the corresponding softkey in the softkey area to select the corresponding function. 4.1.3 Password Password-protected mode for controlling the instrument. Password setting procedure: Press the mnemonic touch key and the page soft key area is displayed: ...

  • Page 28: Baud Rate

    According to the different power supply frequency for the corresponding selection, the main role is to eliminate the power supply noise on the measurement instrument interference, TH2518 provides two kinds of power supply frequency: 50Hz and 60Hz. 4.1.8 Handler Power Supply Press the Hdl Power touch key.

  • Page 29: Base-To-Valve Ratio

    Chapter 4 System Settings and File Management  ON Indicates that the bottom number saving function is turned on. When this function is turned on, it is necessary to execute 0 ADJ under <Measurement Display> page tool. The next time you turn on the power, the bottom number will remain the same as the last 0 ADJ.

  • Page 30: Protocol

    Handler binning board binning signal. 4.2 Document management The TH2518 series instruments can store the parameters set by the user in the form of a file in the internal non-volatile memory of the instrument. When you want to use the same settings next time, you do not need to reset these parameters, just load the corresponding file, you can get the last set parameters.

  • Page 31: Introduction To Store/Recall Functions

    4.2.1 Introduction to Store/Recall Functions The store/recall function allows the user to both save and recall measured results and instrument configuration information to and from the TH2518's internal FLASH or USB flash drive. The following table describes the available preservation methods and their uses:...

  • Page 32: File Management Procedure

    …… Figure 4-3 File structure in a USB flash drive The following points should be noted when using a USB flash drive on the TH2518. Use a USB flash drive with a USB 2.0 interface. The file system of the USB flash drive used should be FAT16 or FAT32 and formatted using the FAT16 or FAT32 standard;...

  • Page 33: Storage Of Measurement Results

    USB flash disk.  Option Touch "Select", the file at the cursor will be selected.TH2518 supports copying multiple files to USB flash disk at the same time. Touch Select again and the selected file will be unselected. 4.2.4 Storage of Measurement Results On the <Measurement Display>...

  • Page 34: Chapter 5 Performance Indicators

    T: Temperature 5.1.2 Measurement Mode Alone: stand-alone mode Scan: Scan mode 5.1.3 Measurement Combinations Measurement parameter combinations TH2518: R, R-T, T TH2518A: R 5.1.4 Range Measurement modes: AUTO, NOMINAL, HOLD, INCREASE, DECREASE. 5.1.5 Trig Internal, manual, external, bus Internal: Continuous measurement of the measured part and output display of the results Manual: Pressing the panel TRIGGER key, the meter carries out a measurement and outputs the result for display and is normally in a waiting state.

  • Page 35: Test Signal

    Basic temperature and humidity environmental conditions that ensure the basic measurement accuracy described below. Temperature range: 23℃± 5℃ Relative humidity: ≤80%RH 5.3.1 Resistance Scanning Measurement Accuracy 1 year of TH2518/TH2518A basic measurement accuracy (23± 5° C, ≤80% RH) 200mΩ 2Ω 20Ω 200Ω...

  • Page 36: Temperature Measurement Accuracy (Pt500, Pt100)

    One-year Accuracy ± 0.45%Rd± 0.8° C ± 0.45%Rd± 1.5° C 5.3.3 Temperature Measurement Accuracy (Analog Input) Basic measurement accuracy of TH2518 series instruments for 1 year (23± 5° C, ≤80% Input Voltage Range 0~2V Display Temperature Range -99.9° C~999.9° C...

  • Page 37: Chapter 6 Remote Control

    As can be seen from Figure 6-1, the pin definitions of the instrument are different from those of the 9-pole connector serial interface pin definitions used by computers. Users can purchase the serial interface cable line between the computer and the Tonghui instrument from Changzhou Tonghui Electronics Co.

  • Page 38: Network Protocol

    Chapter 6 Remote Control Figure 6-7 <Network Settings > Page 6.2.1 Network Protocol Touch the Network Protocol area and the page softkey area is displayed:  TCP/IP TCP/IP is selected, and the instrument network uses the TCP/IP V4 communication protocol. ...

  • Page 39: Ip Address

    Chapter 6 Remote Control 6.2.4 IP Address Touch the corresponding area, the page pops up the numeric keypad to set the IP address, the setting range is 1~255. 6.2.5 Subnet Mask Touch the corresponding area, the page pops up the numeric keypad, to the subnet mask setting, the setting range is 1~255.

  • Page 40: Usbvcom Virtual Serial Port

    By selecting the bus method "USBVCOM", the USB interface can be configured as a virtual serial port (VCOM). 6.4.1 System Configuration Connect the USB port on the rear panel of the TH2518 to the USB port on the host computer via the USB cable. 6.4.2 Installation of Drivers Download TH2518 USBVCOM driver from Tonghui Electronics website>Service...
  • Page 41 Chapter 6 Remote Control At this time, the usb Vcom port is equivalent to a serial port. When the PC does not have a serial port, the serial port-based communication software can be used in this mode as a virtual serial port with the USB port.

  • Page 42: Chapter 7 Th2518 Command Set

    Chapter 7 TH2518 Command Set Chapter 7 TH2518 Command Set 7.1 SCPI Command Set 7.1.1 DISP Command Set 7.1.1.1 DISP:PAGE Setup command: Command Description DISP:PAGE MEAS Set the display page to: <Measurement Display>. DISP:PAGE MSET Set the display page to: <Measurement Setting>.

  • Page 43: Func Command Set

    Chapter 7 TH2518 Command Set Return Content Description Display as OFF Display as ON 7.1.2 FUNC Command Set 7.1.2.1 FUNC:IMP Setup command: Command Description FUNC:IMP R Set the parameters on the <Measurement Settings> page to: FUNC:IMP RT Set the parameters on the <Measurement Settings> page to: FUNC:IMP T Set the parameters on the <Measurement Settings>...
  • Page 44 Chapter 7 TH2518 Command Set 200.00e-3, 2000.0e-3, 20.000e+0, 200.00e+0, 2000.0e+0, 20.000e+3, 200.00e+3 7.1.2.3 FUNC:RANG:MODE Setup command: Command Description FUNC:RANG:MODE AUTO The range is AUTO FUNC:RANG:MODE NOM The range is NOM FUNC:RANG:MODE HOLD The range is HOLD Setup command description: Sets the instrument <Measurement Settings> page parameter to R or R-T range.

  • Page 45: Aper Command Set

    Chapter 7 TH2518 Command Set 0 ADJ is OFF 0 ADJ is ON 7.1.2.6 FUNC:MUNIT Setup command: FUNC:MUNIT UNIT<value> Setup command description: When the measurement mode is Alone, sets the measurement unit in the <Measurement Display> page. <value> indicates the value of the measurement unit in the range of 1 to 6.

  • Page 46: Trig Command Set

    Chapter 7 TH2518 Command Set APER:AVER <value> Setup command description: Sets the average of the instrument's <Measurement Settings> page. The range of <value> is from 1 to 255. Example: APER:AVER 10 Set the average of the instrument's <Measurement Settings> page to 10 times.
  • Page 47 Chapter 7 TH2518 Command Set The current trigger on the <Measurement Settings> page is The current trigger on the <Measurement Settings> page is The current trigger on the <Measurement Settings> page is 7.1.4.3 TRIG:DELAY Setup command: TRIG:DELAY <value> Setup command description: Sets the measurement delay time in the <Measurement Settings>...

  • Page 48: Fetc Command Set

    Chapter 7 TH2518 Command Set 7.1.5 FETC Command Set 7.1.5.1 FETC Query command: FETC? Query command description: This command is used to get the last measurement result of the instrument and the system status. Note: This query command returns data only when the instrument is in the <Measurement Display>...
  • Page 49 Chapter 7 TH2518 Command Set <Main Parameter> Table of measured values for the current main parameter, data type is floating-point. <Subparameter> Table of measured values of the current subparameter, data type is floating-point number. When the measurement mode is parameter R-T, then <primary parameter> is the measured resistance value in Ω, and <secondary parameter>...

  • Page 50: Temp Command Set

    Chapter 7 TH2518 Command Set 2 indicates that the comparison result is: above the upper limit of the comparison boundary (HI) 3 indicates that the result of the comparison is: below the lower limit of the comparison boundary (Lo) 7.1.5.2...
  • Page 51 Chapter 7 TH2518 Command Set PT500 The current parameter sensor on the <Measurement settings> page is PT500 ANAL The current parameter sensor on the <Measurement Settings> page is AnLG_In 7.1.6.2 TEMP:APAR Setup command: TEMP:APAR <data1>,<data2>,<data3>,<data4> Setup command description: Sets V1, T1, V2, and T2 on the instrument <Measurement Settings> page when the sensor is AnLG_In.

  • Page 52: Comp Command Set

    Chapter 7 TH2518 Command Set The return type is an integer, and the return is as follows: Return Content Description The current parameter temperature compensation on the <Measurement Settings> page is OFF. The current parameter temperature compensation on the <Measurement Settings> page is ON.
  • Page 53 Chapter 7 TH2518 Command Set 7.1.7.2 COMP:BEEP {ON|OFF} Setup command: Command Description COMP:BEEP ON Parameter comparison signal is ON COMP:BEEP OFF Parameter comparison signal is OFF Setup command description: Sets the parameter comparison signal for the tool on the instrument <Parameter Settings>...
  • Page 54 Chapter 7 TH2518 Command Set Setup command description: Sets the parameter boundary mode of the instrument <Boundary Settings> page. Query command: COMP:MODE? Query command description: Queries the parameter boundary mode on the instrument <Boundary Settings> page. The return type is an integer, and the return is as follows:...
  • Page 55 Chapter 7 TH2518 Command Set COMP:RES:ATOL:LOW? Query command description: Queries the lower limit of the instrument <Boundary Settings> page when the boundary mode is AbsDev. The return type is a floating-point number, and the return range is from 0 to 2.0E+5.
  • Page 56 Chapter 7 TH2518 Command Set Queries the lower limit when the boundary mode is Perc on the instrument <Boundary Settings> page. The return type is a floating-point number, and the return range is from -99.99 to 99.99. Note: This command only applies to the <System Setup> page where the measurement mode is Alone, the <Measurement Setup>...
  • Page 57 Chapter 7 TH2518 Command Set Note: This command is only applicable to the <System Setup> page where the measurement mode is Alone, the <Measurement Setup> page where the measurement parameter is R or R-T, and the <Boundary Setup> page where the boundary mode is ABS.
  • Page 58 Chapter 7 TH2518 Command Set COMP:TEMP:ATOL:LOW <value> Setup command description: Sets the lower limit when the boundary mode is AbsDev on the instrument <Boundary Settings> page. The range of <value> is from -999.9 to 999.9. units are ° C. Example: COMP:TEMP:ATOL:LOW 180 Sets the lower limit to 180°...
  • Page 59 Chapter 7 TH2518 Command Set Example: COMP:TEMP:PTOL:LOW -10 Sets the lower limit to -10% when the boundary mode is Perc on the instrument <Boundary Settings> page. Query command: COMP:TEMP:PTOL:LOW? Query command description: Queries the lower limit when the boundary mode is Perc on the instrument <Boundary Settings>...

  • Page 60: Chan Command Set

    Chapter 7 TH2518 Command Set COMP:TEMP:ABS:LOW? Query command description: Queries the lower limit when the boundary mode of the instrument <Boundary Settings> page is ABS. The return type is a floating-point number, and the return range is from -100 to 999.9.
  • Page 61 Chapter 7 TH2518 Command Set Query command description: Queries the status of channel n on the instrument <Boundary Settings> page. The return type is an integer, and the return is as follows: Return Content Description The current status of channel n on the <Channel Settings>...
  • Page 62 Chapter 7 TH2518 Command Set CHAN<n>:RES:ATOL:UPP? Query command description: Queries the upper limit of channel n on the instrument <Boundary Settings> page. The return type is a floating-point number, and the return range is from 0 to 2.0E+5. Note: This command only applies to the <System Setup> page where the measurement mode is Scan, the <Measurement Setup>...
  • Page 63 Chapter 7 TH2518 Command Set Queries the upper limit of channel n on the instrument <Boundary Settings> page. The return type is a floating-point number, and the return range is from -99.99 to 99.99. Note: This command is only applicable to the <System Setup> page where the measurement mode is Scan, the <Measurement Setup>...
  • Page 64 Chapter 7 TH2518 Command Set Note: This command is only applicable when the measurement mode is Scan on the <System Setup> page, the measurement parameter is R or R-T on the <Measurement Setup> page, and the boundary mode is ABS on the <Boundary Setup> page.
  • Page 65 Chapter 7 TH2518 Command Set 7.1.8.10 CHAN<n>:TEMP:ATOL:UPP Setup command: CHAN<n>:TEMP:ATOL:UPP <value> Setup command description: Sets the upper limit of channel n on the instrument <Boundary Settings> page. The range of <value> is from -999.9 to 999.9. units are ° C.
  • Page 66 Chapter 7 TH2518 Command Set Sets the upper limit of channel n on the instrument <Boundary Settings> page. <value> ranges from -99.99 to 99.99. units are %. Example: CHAN1:TEMP:PTOL:UPP 10 Sets the upper limit of channel CH01 on the instrument <Boundary Settings> page to 10%.
  • Page 67 Chapter 7 TH2518 Command Set Sets the upper limit of channel CH01 on the instrument <Boundary Setting> page to 200° C. Query command: CHAN<n>:TEMP:ABS:UPP? Query command description: Queries the upper limit of channel n on the instrument <Boundary Settings> page. The return type is a floating-point number, and the return range is from -100 to 999.9.

  • Page 68: Syst Command Set

    Chapter 7 TH2518 Command Set Queries the nominal of channel n on the instrument <Boundary Settings> page. The return type is a floating-point number, and the return range is from -999.9 to 999.9. Note: This command only applies to the <System Setup> page where the measurement mode is Scan, the <Measurement Setup>...
  • Page 69 Chapter 7 TH2518 Command Set Return Content Description The current touch tone on the <System Settings> page is The current touch tone on the <System Settings> page is ON 7.1.9.3 SYST:SHIF Setup command: Command Description SYST:SHIF ON Set the shift output on the <System Settings> page to ON.
  • Page 70 Chapter 7 TH2518 Command Set 7.1.9.5 SYST:EXTVCC Setup command: Command Description SYST:EXVCC INT Set the Hdl power supply on the <System Settings> page to internal SYST:EXTVCC EXT Set the Hdl power supply on the <System Settings> page to external Setup command description: Sets the Hdl power supply on the instrument's <System Setup>...

  • Page 71: Scpi Public Command

    Chapter 7 TH2518 Command Set SYST:LOAD 2 Loads the <Internal Documents> page serial number 2 file. 7.1.9.8 SYST:RESET Setup command: SYST:RESET Setup command description: Triggers a system reset for the <System Settings> page tool. 7.1.9.9 SYST:PUMP Setup command: Command Description...

  • Page 72: Scpi Protocol Debugging

    Tools. 7.2.2 Debugging Assistant Download Download SSCOM3.2 Serial Debugging Assistant compatible with WIN10 from the official website of Tonghui Electronics>Service and Support>Download Center>Software at http://www.tonghui.com.cn/cn/upload/Download/20191209144423178.rar. 7.2.3 Instrument Commissioning Use a serial crossover cable to connect the computer to the instrument.

  • Page 73: Getting Measurement Results

    Chapter 7 TH2518 Command Set Figure 6-16 SSCOM3.2 Software Settings Follow step 3) to set the serial port number. Follow the baud rate settings on the instrument's <System Settings> page. Click Open Serial Port when the settings are complete. Click Send New Line on the serial port software (no data is returned without...

  • Page 74: Modbus System Commands

    Chapter 7 TH2518 Command Set 7.2.4.1 Non-automatic The first: Set Instrument <Parameter Setup> <Measurement Setup> Trigger Mode to BUS. TRIG FETC? Get the measurement again repeat sending . The second: Set Instrument <Parameter Setup> <Measurement Setup> Trigger Mode to BUS.
  • Page 75 Chapter 7 TH2518 Command Set Register Register Send Function Address Address Number Number Address Code High High High Send Address The transmit address is the local address of the instrument, which can be set in the parameter bus address of the communication setting interface of the instrument, and the value range is: 1~31.
  • Page 76 Chapter 7 TH2518 Command Set Registe Send Func Addr Addr Register Addr tion Number Numbe High Code High High r Low Return Format: Func Send Byte tion Data Data Data ..Byte 1 Byte 2 Byte N High ress Send Address...

  • Page 77: Public Command Description

    Chapter 7 TH2518 Command Set CRC 16-bit checksums, using the lookup table method for CRC checksums. See section 7.3.3 for details. 7.3.2 Public Command Description 7.3.2.1 Address 0x0001 (Reset) Write command: Send Funct Addr Addr Regis Addr Byte Data Addres...
  • Page 78 Chapter 7 TH2518 Command Set Data 1~4 indicate the test resistance value or temperature value, and data 5~8 indicate the comparison result. Measurement mode is Alone on the <System Setup> page, and comparison under <Measurement Display> is OFF. return command when the measurement...

  • Page 79: Disp Command Description

    Coun Data 1~2 Address Code Calculati on by 0x01~0x1F 0x03 0x02 table look-up method Command description: Returns the model number of the instrument. 0 indicates TH2518; 1 indicates TH2518A. 7.3.3 DISP Command Description 7.3.3.1 Address 0x0004 (Display Page) Write command:...
  • Page 80 Chapter 7 TH2518 Command Set Send Funct Addr Addr Regis Addr Byte Data Addre Coun Code High High Calcula tion by 0x01~ 0x10 0x00 0x04 0x00 0x01 0x02 table 0x1F look-up method Description: Sets the display page of the instrument.

  • Page 81: Func Command Description

    Chapter 7 TH2518 Command Set Send Funct Addr Addr Regis Addr Byte digita Addre Coun Code High High Calculati on by 0x01~ 0x10 0x00 0x05 0x00 0x01 0x02 0 or 1 table 0x1F look-up method Command description: Sets the display status under Tools on the instrument <Measurement Display> page.
  • Page 82 Chapter 7 TH2518 Command Set Read command: Send Funct Addr Addr Regis Addr Addre Code High High Calcula tion by 0x01~ table 0x03 0x00 0x06 0x00 0x01 0x1F look-u method Return command: Func Byte Send Data tion Coun Address Code...
  • Page 83 Chapter 7 TH2518 Command Set Return command: Func Byte Send Data 1 to tion Coun Address Code Calculat ion by 0x01~0 0x03 0x04 0~2E+5 table look-up method Description：Queries the range whose parameter is R or R-T under the instrument <Measurement Setting> and return four-byte integer data. The return content is as follows: 200.00e-3, 2000.0e-3, 20.000e+0, 200.00e+0, 2000.0e+0, 20.000e+3, 200.00e+3...
  • Page 84 Chapter 7 TH2518 Command Set Send Funct Addr Addr Regis Addr Byte Data Addre Coun Code High High Calculati on by 0x01~ 0x10 0x00 0x09 0x00 0x01 0x02 table 0x1F look-up method Command description: Bottom data after clearing 0 ADJ.
  • Page 85 Chapter 7 TH2518 Command Set Send Funct Addr Addr Regis Addr Addre Code High High Calculat 0x01~ 0x03 0x00 0x0A 0x00 0x01 table 0x1F look-up method Return command: Func Byte Send Data tion Coun Address Code Calcula tion by 0x01~0...

  • Page 86: Aper Command Description

    Chapter 7 TH2518 Command Set Func Byte Send Data tion Coun Address Code Calcula tion by 0x01~0 0x03 0x02 table look-up method Description: Queries the test unit on the <Measurement Display> page when the instrument is in stand-alone test mode.

  • Page 87: Trig Command Description

    Chapter 7 TH2518 Command Set 7.3.5.2 Address 0x000D (Average) Write command: Send Funct Addr Addr Regis Addr Byte Data Addre Coun Code High High Calcula tion by 0x01~ 0x10 0x00 0x0D 0x00 0x01 0x02 1~255 table 0x1F look-up method Command description: Sets the average on the instrument <Measurement Settings>...
  • Page 88 Chapter 7 TH2518 Command Set Triggers the instrument to measure once. 7.3.6.2 Address 0x000F (Trigger Mode) Write command: Send Funct Addr Addr Regis Addr Byte Data Addre Coun Code High High Calcula tion by 0x01~ 0x10 0x00 0x0F 0x00 0x01...
  • Page 89 Chapter 7 TH2518 Command Set Send Funct Addr Addr Regis Addr Byte Addre Coun Data 1 to 4 CRC Code High High Calculat ion by 0x01~ 0x10 0x00 0x10 0x00 0x02 0x04 0~9.999 table 0x1F look-up method Command description: Sets the measurement delay time on the instrument <Measurement Settings> page. The range of data 1 to 4 is from 0 to 9.999.

  • Page 90: Fetc Command Description

    Chapter 7 TH2518 Command Set Send Funct Addr Addr Regis Addr Addre Code High High Calculati 0x01~ 0x03 0x00 0x11 0x00 0x01 table 0x1F look-up method Return command: Func Byte Send Data tion Coun Address Code Calcula tion by 0x01~0...
  • Page 91 Chapter 7 TH2518 Command Set <Main Parameter> range is -3.4E+38~3.4E+38. data 1~4 indicates <Main Parameter>. Returns +9.90000E+37 when the range is exceeded, or a measurement error exists. Note: This query command returns data only when the instrument is in the <Measurement Display>...
  • Page 92 Chapter 7 TH2518 Command Set Return command: Send Funct Byte Data 1 to Addres Data 5~8 Count Code Calculati on by 0x01~ -3.4E+38~ -3.4E+38~3. 0x03 0x08 table 0x1F 3.4E+38 4E+38 look-up method Description: The measurement mode on the <System Setup> page is Alone, and the comparison under <Measurement Display>...
  • Page 93 Chapter 7 TH2518 Command Set <Sub-parameter> range is -3.4E+38~3.4E+38. data 5~8 indicates <Sub-parameter>. Returns +9.90000E+37 when the range is exceeded, or a measurement error exists. <comparison result> ranges from 1 to 3. data 9 to 12 indicates <comparison result>. 1 indicates that the comparison result is GD; 2 indicates that the comparison result is HI;...
  • Page 94 Chapter 7 TH2518 Command Set Note: This query command returns data only when the instrument is in the <Measurement Display> page. 7.3.7.7 Address 0x0018 (Read scanning measurement, compare ON) Read command: Send Funct Addr Addr Regis Addr Addre Code High...

  • Page 95: Temp Command Description

    Chapter 7 TH2518 Command Set 0 means non-automatic; 1 means automatic. Note: Use this command, see Section 7.3.1 for details. 7.3.8 TEMP Command Description 7.3.8.1 Address 0x001A (Sensor) Write command: Send Funct Addr Addr Regis Addr Byte Data Addre Coun...
  • Page 96 Chapter 7 TH2518 Command Set 7.3.8.2 Address 0x001B (V1, T1, V2, T2) Write command: Send Funct Addr Addr Regis Addr Byte Data Data Data Data Addre Coun 9 to 1 to 4 13-16 Code High High Calcul ation 0x01~ -99.9~ -99.9~...
  • Page 97 Chapter 7 TH2518 Command Set Data 9 to 12 are the values of the constant V2, and the range of data 9 to 12 is from 0 to 2.00 in V. Data 13 to 16 are the values of the constant T2, and the range of data 13 to 16 is from -99.9 to 999.9 in °...

  • Page 98: Comp Command Description

    Chapter 7 TH2518 Command Set Send Funct Addr Addr Regis Addr Byte Data 1 to Addre Coun Data 5~8 CRC Code High High Calculati on by 0x01~ -99999~ 0x10 0x00 0x1D 0x00 0x02 0x04 -10~99.9 table 0x1F 99999 look-up method Command description: on the <Measurement Settings>...
  • Page 99 Chapter 7 TH2518 Command Set 0 indicates that the parameter comparison status is OFF; 1 indicates that the parameter comparison status is ON. Read command: Send Funct Addr Addr Regis Addr Addre Code High High Calculati 0x01~ 0x03 0x00 0x1E...
  • Page 100 Chapter 7 TH2518 Command Set Return command: Func Byte Data Send Address tion Coun Code Calculation by 0x01~0x1F 0x03 0x02 0 or 1 table look-up method Description: Queries the parameter comparison signal under Tools on the instrument <Boundary Settings> page.
  • Page 101 Chapter 7 TH2518 Command Set 0 indicates that the parameter signal mode is NG. 1 indicates that the parameter signal mode is GD. 7.3.9.4 Address 0x0021 (Boundary Mode) Write command: Send Funct Addr Addr Regis Addr Byte Data Addre Coun...
  • Page 102 Chapter 7 TH2518 Command Set Send Funct Addr Addr Regis Addr Byte Addre Coun Data 1 to 4 CRC Code High High Calculat ion by 0x01~ 0x10 0x00 0x22 0x00 0x02 0x04 0~2E+5 table 0x1F look-up method Command description: Sets the nominal of the instrument's <Boundary Settings> page. The range of data 1 to 4 is from 0 to 2E+5 in Ω.
  • Page 103 Chapter 7 TH2518 Command Set Send Funct Addr Addr Regis Addr Addre Code High High Calculat 0x01~ 0x03 0x00 0x23 0x00 0x02 table 0x1F look-up method Return command: Func Byte Send Data 1 to tion Coun Address Code Calculat ion by...
  • Page 104 Chapter 7 TH2518 Command Set Func Byte Send Data 1 to tion Coun Address Code Calculat ion by 0x01~0 0x03 0x04 0~2E+5 table look-up method Description: Queries the lower limit of the instrument <Boundary Settings> page. The return type is a floating-point number, and the return range is from 0 to 2E+5.
  • Page 105 Chapter 7 TH2518 Command Set Note: This command only applies to the <System Setup> page where the measurement mode is Alone, the <Measurement Setup> page where the measurement parameter is R or R-T, and the <Boundary Setup> page where the boundary mode is Perc.
  • Page 106 Chapter 7 TH2518 Command Set Send Funct Addr Addr Regis Addr Byte Addre Coun Data 1 to 4 CRC Code High High Calculat ion by 0x01~ 0x10 0x00 0x27 0x00 0x02 0x04 0~2E+5 table 0x1F look-up method Command description: Sets the upper limit of the instrument <Boundary Setting> page. The range of data 1 to 4 is from 0 to 2E+5.
  • Page 107 Chapter 7 TH2518 Command Set Send Funct Addr Addr Regis Addr Addre Code High High Calculat 0x01~ 0x03 0x00 0x28 0x00 0x02 table 0x1F look-up method Return command: Func Byte Send Data 1 to tion Coun Address Code Calculat ion by...
  • Page 108 Chapter 7 TH2518 Command Set Func Byte Send Data 1 to tion Coun Address Code Calculat ion by 0x01~0 -100~ 0x03 0x04 table 999.9 look-up method Description: Queries the nominal of the instrument <Boundary Settings> page. The return type is a floating-point number, and the return range is from -100 to 999.9 in °...
  • Page 109 Chapter 7 TH2518 Command Set Note: This command only applies to the <System Setup> page with measurement mode Alone, the <Measurement Setup> page with measurement parameter T, and the <Boundary Setup> page with boundary mode AbsDev. 7.3.9.14 Address 0x002B (AbsDev Lower Limit)
  • Page 110 Chapter 7 TH2518 Command Set Send Funct Addr Addr Regis Addr Byte Addre Coun Data 1 to 4 CRC Code High High Calculat ion by 0x01~ -99.99~ 0x10 0x00 0x2C 0x00 0x02 0x04 table 0x1F 99.99 look-up method Command description: Sets the upper limit of the instrument's <Boundary Settings>...
  • Page 111 Chapter 7 TH2518 Command Set Send Funct Addr Addr Regis Addr Addre Code High High Calculat 0x01~ 0x03 0x00 0x2D 0x00 0x02 table 0x1F look-up method Return command: Func Byte Send Data 1 to tion Coun Address Code Calculat ion by 0x01~0 -99.99~...
  • Page 112 Chapter 7 TH2518 Command Set Func Byte Send Data 1 to tion Coun Address Code Calculat ion by 0x01~0 -100~ 0x03 0x04 table 999.9 look-up method Description: Queries the upper limit of the instrument <Boundary Setting> page. The return type is a floating-point number, and the return range is from -100 to 999.9 in ° C.

  • Page 113: Chan Command Description

    Chapter 7 TH2518 Command Set 7.3.10 CHAN Command Description 7.3.10.1 Address 0x0030 (Channel n) Write command: Send Funct Addr Addr Regis Addr Byte Addre Coun Data 1~2 Code High High Calculat ion by 0x01~ 0x10 0x00 0x30 0x00 0x01 0x02...
  • Page 114 Chapter 7 TH2518 Command Set Queries the channel state of channel n on the instrument <Channel Settings> page. 0 indicates that the channel state of channel n is OFF. 1 indicates that the channel state of channel n is ON.
  • Page 115 Chapter 7 TH2518 Command Set 7.3.10.4 Address 0x0033 (Nominal Ω) Write command: Send Funct Addr Addr Regis Addr Byte Addre Coun Data 1 to 4 CRC Code High High Calculat ion by 0x01~ 0x10 0x00 0x33 0x00 0x02 0x04 0~2E+5...
  • Page 116 Chapter 7 TH2518 Command Set Sets the upper limit of the instrument's <Boundary Setting> page. The range of data 1 to 4 is from 0 to 2E+5 in Ω. Read command: Send Funct Addr Addr Regis Addr Addre Code High...
  • Page 117 Chapter 7 TH2518 Command Set Func Byte Send Data 1 to tion Coun Address Code Calculat ion by 0x01~0 0x03 0x04 0~2E+5 table look-up method Description: Queries the lower limit of the instrument <Boundary Settings> page. The return type is a floating-point number, and the return range is from 0 to 2E+5.
  • Page 118 Chapter 7 TH2518 Command Set Note: This command is only applicable to the <System Setup> page where the measurement mode is Scan, the <Measurement Setup> page where the measurement parameter is R or R-T, and the <Boundary Setup> page where the boundary mode is Perc.
  • Page 119 Chapter 7 TH2518 Command Set Send Funct Addr Addr Regis Addr Byte Addre Coun Data 1 to 4 CRC Code High High Calculat ion by 0x01~ 0x10 0x00 0x38 0x00 0x02 0x04 0~2E+5 table 0x1F look-up method Command description: Sets the upper limit of the instrument <Boundary Setting> page. The range of data 1 to 4 is from 0 to 2E+5 in Ω.
  • Page 120 Chapter 7 TH2518 Command Set Send Funct Addr Addr Regis Addr Addre Code High High Calculat 0x01~ 0x03 0x00 0x39 0x00 0x02 table 0x1F look-up method Return command: Func Byte Send Data 1 to tion Coun Address Code Calculat ion by...
  • Page 121 Chapter 7 TH2518 Command Set Func Byte Send Data 1 to tion Coun Address Code Calculat ion by 0x01~0 -100~ 0x03 0x04 table 999.9 look-up method Description: Queries the nominal of the instrument <Boundary Settings> page. The return type is a floating-point number, and the return range is from -100 to 999.9 in °...
  • Page 122 Chapter 7 TH2518 Command Set Note: This command only applies to the <System Setup> page where the measurement mode is Scan, the <Measurement Setup> page where the measurement parameter is T, and the <Boundary Setup> page where the boundary mode is AbsDev.
  • Page 123 Chapter 7 TH2518 Command Set Send Funct Addr Addr Regis Addr Byte Addre Coun Data 1 to 4 CRC Code High High Calculat ion by 0x01~ -99.99~ 0x10 0x00 0x3D 0x00 0x02 0x04 table 0x1F 99.99 look-up method Command description: Sets the upper limit of the instrument's <Boundary Settings>...
  • Page 124 Chapter 7 TH2518 Command Set Send Funct Addr Addr Regis Addr Addre Code High High Calculat 0x01~ 0x03 0x00 0x3E 0x00 0x02 table 0x1F look-up method Return command: Func Byte Send Data 1 to tion Coun Address Code Calculat ion by 0x01~0 -99.99~...
  • Page 125 Chapter 7 TH2518 Command Set Func Byte Send Data 1 to tion Coun Address Code Calculat ion by 0x01~0 -100~ 0x03 0x04 table 999.9 look-up method Description: Queries the upper limit of the instrument <Boundary Setting> page. The return type is a floating-point number, and the return range is from -100 to 999.9 in ° C.

  • Page 126: Syst Command Description

    Chapter 7 TH2518 Command Set 7.3.11 SYST Command Description 7.3.11.1 Address 0x0041 (Touch Tone) Write command: Send Funct Addr Addr Regis Addr Byte Data Addre Coun Code High High Calculati on by 0x01~ 0x10 0x00 0x41 0x00 0x01 0x02 0 or 1...
  • Page 127 Chapter 7 TH2518 Command Set Sets the measurement mode on the instrument's <System Settings> page. 0 indicates that the measurement mode on the <System Settings> page is Alone. 1 indicates that the measurement mode on the <System Settings> page is Scan.
  • Page 128 Chapter 7 TH2518 Command Set method Return command: Func Byte Send Data tion Coun Address Code Calcula tion by 0x01~0 0x03 0x02 0 or 1 table look-up method Description: Queries the shift output of the <System Settings> page of the instrument.
  • Page 129 Chapter 7 TH2518 Command Set 7.3.11.5 Address 0x0045 (Hdl Power Supply) Write command: Send Funct Addr Addr Regis Addr Byte Data Addre Coun Code High High Calculati on by 0x01~ 0x10 0x00 0x45 0x00 0x01 0x02 0 or 1 table...

  • Page 130: Modbus Protocol Debugging

    Chapter 7 TH2518 Command Set Triggers the system reset for the <System Settings> page tool. 7.1 MODBUS Protocol Debugging Note: First follow the steps in section 7.2 to debug the SCPI protocol serial communication successfully. This step is to confirm whether there is any problem with the serial port cable.

  • Page 131: Getting Measurement Results

    Chapter 7 TH2518 Command Set The bus address is the same as the transmit address. Whether PROTO is MODBUS. 7.4.3 Getting Measurement Results Note: The instrument returns measurement data only on the <Measurement Display> page. 7.4.3.1 Non-automatic  Stand-alone mode Set Instrument <Parameter Setup>...
  • Page 132 Chapter 7 TH2518 Command Set Send command address 0x02 to trigger the instrument to measure once. Send: 08 03 00 02 00 01 25 53 Return: 08 03 08 3B 54 C6 1E 40 40 00 00 41 59 Read the results again and repeat step 3).

  • Page 133: Modbus Commands Detailed Description

    Chapter 7 TH2518 Command Set 7.4.3.3 Fully Automatic  Stand-alone mode Set Instrument <Parameter Setup> <Measurement Setup> Trigger Mode to INT. Set Instrument <System Setup> <Tools> FetcAuto to ON.(Switchboard Save) Each time the instrument finishes measurement, it sends the measurement result command to the host computer.

  • Page 134: Crc Low And Crc High

    Chapter 7 TH2518 Command Set If the total number of bytes is 8, it means 2 floating-point numbers, data byte 1 to data byte 4 form the first floating-point number, data byte 5 to data byte 8 form the second floating-point number.

  • Page 135: Return Command Format

    Chapter 7 TH2518 Command Set crc_code = ((crc_high << 8) | crc_low); return(crc_code); 7.5.4 Return Command Format Send Func Byte Data Data Data Data Data Data Data Data Addr tion Coun byte byte byte byte byte byte byte byte High...
  • Page 136 Chapter 7 TH2518 Command Set 43 0F F5 C3 converts decimal number to 143.96, indicating the measured value of channel CH3 40 00 00 00 Converts decimal number to 2, indicating that the CH3 comparison result is disqualified 40 80 00 00 Converts decimal number to 4, indicating channel CH4 42 CC 07 2B Converts decimal number to 102.014, indicating the measured value of...

  • Page 137: Chapter 8 Handler Interface Usage Notes

    Chapter 8 Handler Interface Usage Notes Chapter 8 Handler Interface Usage Notes TH2518 series DC Resistance/Temperature Scanners provide users with a Handler interface, which is mainly used for inputting signals such as triggers and outputting sorting results. When the instrument is used in automatic component sorting test system, this interface provides the contact signal with the system and the output signal of sorting results.

  • Page 138: Handler Timing Diagram

    Chapter 8 Handler Interface Usage Notes /EOT Measurement end signal, low active <Channel Setup> page is set to all open channels of U6 whose test /PASS6 comparison results pass, this pin outputs a low level. If one fails, output high level. <Channel Setup>...

  • Page 139: Scanning Mode

    Chapter 8 Handler Interface Usage Notes Timing Minimum Value Maximum Value t1: Trigger pulse width t2: One measurement time t3+t4 t3: Measurement delay time See measurement delay setting t4: Sampling time for one Sampling Time measurement t5: Time to format and display Display "On": 17ms test results Display "Off": 2.5ms...

  • Page 140: Shift Output Timing Of Comparison Results For Each Test Channel

    Chapter 8 Handler Interface Usage Notes ta1,ta2..taN-1,taN Sampling Time tt: temperature test time Sampling Time Note 1: Sampling Time = 6ms * Average (50 Hz) / 5ms * Average (60 Hz) Fast 21 ms * Average (50 Hz) / 16.6ms (60 Hz) * Average Medium 105 ms * Average (50 Hz) / 110ms * Average (60 Hz) Slow Average is the average of <Measurement Settings>.

  • Page 141: Electrical Characteristics

    CPU to the Handler interface. These three signals are used with the single-channel comparative sorting board accessory (see below for details) for the single-channel sorting output of qualified and unqualified signals. 8.3 Channel Comparison Sorting Board-TH2518-01 8.3.1 Introduction to Sorting Board Based...

  • Page 142: Sorting Board Ports And Port Description

    Chapter 8 Handler Interface Usage Notes 8.3.2 Sorting Board Ports and Port Description Port Port Name Meaning Number Scan mode: all open channels whose test comparison results pass, this pin outputs a low level. If one fails, output high level. J501-1 PASS-TOTAL Stand-alone mode: test comparison pass, output low level.

  • Page 143: Cascade Of Sorting Board

    Chapter 8 Handler Interface Usage Notes J504-3 PASS-CH12 Number 12 sorting output. Pass is low, fail is high. J504-4 PASS-CH13 Number 13 sorting output. Pass is low, fail is high. J504-5 PASS-CH14 Number 14 sorting output. Pass is low, fail is high. J504-6 PASS-CH15 Number 15 sorting output.
  • Page 144 Chapter 8 Handler Interface Usage Notes CH01 ↔ PASS-CH01 CH09 ↔ PASS-CH09 CH02 ↔ PASS-CH02 CH10 ↔ PASS-CH10 CH03 ↔ PASS-CH03 CH11 ↔ PASS-CH11 CH04 ↔ PASS-CH04 CH12 ↔ PASS-CH12 CH05 ↔ PASS-CH05 CH13 ↔ PASS-CH13 CH06 ↔ PASS-CH06 CH14 ↔ PASS-CH14 CH07 ↔...

  • Page 145: Sorting Mode Shift

    Chapter 8 Handler Interface Usage Notes CH87 ↔ PASS-CH07 CH88 ↔ PASS-CH08 8.3.5 Sorting Mode SHIFT A single board supports up to 16 channels of single-channel sorting and comparison results output. A cascade of 6 sorting boards can support up to 90 channels of sorting and comparison results output.

  • Page 146: Sorting Board Shift Output Signal Sketch

    Chapter 8 Handler Interface Usage Notes E.g. 3: CH02, CH04, CH05, CH07, CH09, CH11, CH12, CH13, CH15, CH17, CH20, CH23, CH25, CH26, CH28, CH30, CH32 ON, rest OFF. At this time: CH02 ↔ PASS-CH16 for the second sorting plate, CH04 ↔ PASS-CH01 for the first sorting plate.

  • Page 147: Precautions For Use

    After docking this sorting board with the Handler interface, the internal Handler of TH2518 instrument will work on the internal power supply regardless of whether the Handler power supply of the instrument is selected internally or externally.

  • Page 148: Chapter 9 Packages & Warranty

    9.2 Option TH26056 Junction Box TH2518-01 Channel Comparison Sorting Board 9.3 Symbol The following symbols are on the panel or nameplate of each instrument. Manufacturer's name or trademark.

  • Page 149: Storage

    Chapter 9 Packages & Warranty 9.6 Storage The measuring instrument is stored in a ventilated room with an ambient temperature of 5℃～40℃ and a relative humidity of not more than 85%, and the air should not contain harmful impurities that corrode the measuring instrument. 9.7 Warranty Warranty period: The warranty period of two years shall be calculated from the date of shipment of the instrument purchased from the Company by the user unit, or from the date of...

  • Page 150: Chapter 10 Appendix

    Some parts of this manual apply to software version V1.4.4 or later. 10.1.1 TH2518 Upgrade Copy the file TH2518.sec to a USB flash drive and insert it into the TH2518 instrument USB flash drive port. Turn on the TH2518, enter the <System Setup> interface, set the "Password" setting item to "Lock System", and the system lock password to "2518".
  • Page 151 Version: V1.1.3 Date: 2020.11.23 Description: Modifies the PT100 and PT500 temperature ranges. Modifies TH2518 command set section and typography. Version: V1.1.4 Date: 2021.04.25 Description： Modifies the picture of the system setup interface and add the description of bottom saving and bottom valve ratio.

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