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RKC INSTRUMENT LE100 Communication Instruction Manual

Back pressure type indicator
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Back Pressure Type
Indicator
LE100
Communication
Instruction Manual
IMR01C02-E3
RKC INSTRUMENT INC.
®

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Summary of Contents for RKC INSTRUMENT LE100

  • Page 1 Back Pressure Type Indicator LE100 Communication Instruction Manual IMR01C02-E3 RKC INSTRUMENT INC. ®...
  • Page 2 Microsoft, Windows and Windows NT are registered trademarks of Microsoft Corporation in the USA and other countries. All Rights Reserved, Copyright  1999, RKC INSTRUMENT INC.
  • Page 3 Thank you for purchasing the RKC instrument. In order to achieve maximum performance and ensure proper operation of your new instrument, carefully read all the instructions in this manual. Please place this manual in a convenient location for easy reference.
  • Page 4 CAUTION This is a Class A instrument. In a domestic environment, this instrument may cause radio interference, in which case the user may be required to take adequate measures. This instrument is protected from electric shock by reinforced insulation. Provide reinforced insulation between the wire for the input signal and the wires for instrument power supply, source of power and loads.

  • Page 5: Table Of Contents

    CONTENTS Page 1. OUTLINE ................1 2. SPECIFICATIONS..............2 3. WIRING .................3 4. SETTING ................5 4.1 Transfer to Communication Parameter Group..........6 4.2 Setting the Communication Parameters ............7 4.3 Communication Requirements ..............11 5. PROTOCOL ................13 5.1 Polling ......................13 5.1.1 Polling procedures ....................14 5.1.2 Polling procedure example ................17 5.2 Selecting ......................18 5.2.1 Selecting procedures ..................18 5.2.2 Selecting procedure example ................21...
  • Page 6 MEMO i - 4 IMR01C02-E3...

  • Page 7: Outline

    1. OUTLINE The back pressure type indicator LE100 interfaces with the host computer via RKC communication protocol. Host computer LE100 RS-485 LE100 Host computer LE100 RS-232C RS-232C/RS-485 converter LE100 LE100 LE100 IMR01C02-E3...

  • Page 8: Specifications

    2. SPECIFICATIONS Interface: Based on RS-485, EIA standard Connection method: 2-wire system, half-duplex multi-drop connection Communication distance: 1 km max. The maximum communication distance will be affected by the surrounding conditions. Synchronous method: Start/stop synchronous type Communication speed: 2400 bps, 4800 bps, 9600 bps, 19200 bps Data bit configuration: Start bit: 1 Data bit: 7 or 8...

  • Page 9: Wiring

    T/R (A) Send data/Receive data T/R (B) Signal ground Wiring method Connection to the RS-485 port of the host computer Paired wire RS-485 LE100 Host computer T/R (A) T/R (A) SD (TXD)：Send data T/R (B) T/R (B) Communication RD (RXD)：Receive data...
  • Page 10 When the host computer uses Windows 95/98/NT, use a RS-232C/RS-485 converter with an automatic send/receive transfer function. Recommended: CD485, CD485/V manufactured by Data Link, Inc. or equivalent. The cable is provided by the customer. Connection with up to 31 LE100 and one host computer Host computer Host computer RS-232C...

  • Page 11: Setting

    4. SETTING To establish communication parameters between host computer and LE100, it is necessary to set the device address, communication speed, data bit configuration and interval time on each LE100 in the communication parameter group. Power ON Unit Display (Display for approx. 3 seconds)

  • Page 12: Transfer To Communication Parameter Group

    4. SETTING 4.1 Transfer to Communication Parameter Group 1. To go to the environment setting mode, you must be in PV display. Press and hold the DOWN key and press the SET key at the same time to initiate environment setting mode. The first parameter to be displayed will be the PG01.

  • Page 13: Setting The Communication Parameters

    4. SETTING 4.2 Setting the Communication Parameters To select parameters in communication parameter group, press the SET key. The parameters are displayed and sequenced in the order of device address, Add, communication speed, bPS, data bit configuration, bIT and interval time set value, InT. Setting procedure Device address [Add]...
  • Page 14 Even * The interval time for the LE100 should be set to provide a time for host computer to finish sending all data including stop bit and to switch the line to receive data. If the interval time between the two is too short, the LE100 may send data before the host computer is ready to receive it.
  • Page 15 4. SETTING Setting procedure example 1. Go to the communication parameter group PG10 so that device address, Add, is displayed. Present set value is displayed, and the least significant digit brightly lit. Device address 2. Set the device address. Press the UP key to enter 5 at the least significant digit. Example: Setting the device address to 15.
  • Page 16 4. SETTING 5. Press the SET key to set the value thus set. The display changes to the next communication parameter. It the SET key is not pressed within 1 minute, the present display returns to the PV display and the value set here returns to that before the setting is changed. Communication speed 6.

  • Page 17: Communication Requirements

    Whether the host computer is using either the polling or selecting procedure for communication, the following processing times are required for LE100 to send data: -Response wait time after LE100 sends BCC in polling procedure -Response wait time after LE100 sends ACK or NAK in selecting procedure Polling procedure Procedure details...
  • Page 18 Response send time after LE100 receives BCC + Interval time b: Response wait time after LE100 sends ACK or Response wait time after LE100 sends NAK To switch the host computer from transmission to reception, send data must be on line. To check if data is on line, do not use the host computer’s transmission buffer but confirm it by...

  • Page 19: Protocol

    5. PROTOCOL LE100 uses the polling/selecting method to establish a data link. The basic procedure is followed ANSI X3.28 subcategory 2.5, A4 basic mode data transmission control procedure (Fast selecting is the selecting method used in LE100). The polling/selecting procedures are a centralized control method where the host computer controls the entire process.

  • Page 20: Polling Procedures

    Identifier address 1. Device address (2 digits) The device address specifies the LE100 to be polled and each LE100 must have its own unique device address. For details, see 4.2 Setting the Communication Parameters (P. 7). 2. Identifier (2 digits) The identifier specifies the type of data that is requested from the LE100.
  • Page 21 • When all the data has been sent (5) No response from the LE100 The LE100 will not respond if the polling address is not received correctly. It may be necessary for the host computer to take corrective action such as a time-out.
  • Page 22 An acknowledgment ACK is sent by the host computer when data received is correct. When the LE100 receives ACK from the host computer, the LE100 will send any remaining data of the next identifier without additional action from the host computer.

  • Page 23: Polling Procedure Example

    Normal transmission Host computer send Host computer send Host computer send Polling Identifier address Data Next send data Identifier LE100 send Send data LE100 send Error transmission Host computer send Host computer send Host computer send Error data Polling Identifier...

  • Page 24: Selecting

    Host computer sends selecting address for the selecting sequence. Device address (2 digits) The device address specifies the LE100 to be selected and each LE100 must have its own unique device address. For details, see 4.2 Setting the Communication Parameters (P. 7).
  • Page 25 For the STX, ETX and BCC, see 5.1 Polling (P. 13). 1. Identifier (2 digits) The identifier specifies the type of data that is requested from the LE100, such as set value. For details, see 5.3 Communication Identifier List (P. 22).
  • Page 26 An acknowledgment ACK is sent by the LE100 when data received is correct. When the host computer receives ACK from the LE100, the host computer will send any remaining data. If there is no more data to be sent to LE100, the host computer sends EOT to terminate the data link. (5) Negative acknowledge NAK If the LE100 does not receive correct data from the host computer, it sends a negative acknowledgment NAK to the host computer.

  • Page 27: Selecting Procedure Example

    Normal transmission Host computer send Host computer send Host computer send Data Selecting Next send data Identifier address Send data LE100 send LE100 send Error transmission Error data Host computer send Host computer send Host computer send …… Selecting Data...

  • Page 28: Communication Identifier List

    5. PROTOCOL 5.3 Communication Identifier List Communication is not possible when an identifier is specified that the LE100 can not recognize. The number of digits for data is 6. (Attribute RO: Read only, WO: Write only, R/W: Read and Write)
  • Page 29 5. PROTOCOL Continued from the previous page. (Attribute RO: Read only, WO: Write only, R/W: Read and Write) Name Iden- Description Factory Attrib tifier set value -ute Error code No error ----- Except 0: Error occurs To vary ID data Model code depending on the...
  • Page 30 5. PROTOCOL Continued from the previous page. (Attribute RO: Read only, WO: Write only, R/W: Read and Write) Name Iden- Description Factory Attrib tifier set value -ute Number of wafer processing 1 to Number of wafer processing ----- times monitor times setting Amount of emptiness -5.00 to +5.00 of full span...
  • Page 31 5. PROTOCOL Continued from the previous page. (Attribute RO: Read only, WO: Write only, R/W: Read and Write) Name Iden- Description Factory Attrib tifier set value -ute Decimal point position 0: No digit below decimal point selection * 1: 1 digit below decimal point 2: 2 digit below decimal point 3: 3 digit below decimal point Number of linearizing table...
  • Page 32 5. PROTOCOL Continued from the previous page. (Attribute RO: Read only, WO: Write only, R/W: Read and Write) Name Iden- Description Factory Attrib tifier set value -ute Output 1 type selection 0: OFF 1: Process high output 2: Process low output 3: Deviation high output 4: Deviation low output Output 1 deviation value...
  • Page 33 5. PROTOCOL Continued from the previous page. (Attribute RO: Read only, WO: Write only, R/W: Read and Write) Name Iden- Description Factory Attrib tifier set value -ute Output 3 type selection 0: OFF 1: Process high output 2: Process low output 3: Deviation high output 4: Deviation low output Output 3 deviation value...
  • Page 34 5. PROTOCOL Continued from the previous page. (Attribute RO: Read only, WO: Write only, R/W: Read and Write) Name Iden- Description Factory Attrib tifier set value -ute Output 5 type selection 0: OFF 1: Process high output 2: Process low output 3: Deviation high output 4: Deviation low output Output 5 deviation value...
  • Page 35 5. PROTOCOL Continued from the previous page. (Attribute RO: Read only, WO: Write only, R/W: Read and Write) Name Iden- Description Factory Attrib tifier set value -ute 1, 2 Output 7 type selection 0: OFF 1: Process high output 2: Process low output 3: Deviation high output 4: Deviation low output Output 7 deviation value...
  • Page 36 5. PROTOCOL Continued from the previous page. (Attribute RO: Read only, WO: Write only, R/W: Read and Write) Name Iden- Description Factory Attrib tifier set value -ute Monitor output high Monitor output low to Scale high 1000 Monitor output low Scale low to Monitor output high End specific gravity setting 0.800 to 2.500...
  • Page 37 5. PROTOCOL Continued from the previous page. (Attribute RO: Read only, WO: Write only, R/W: Read and Write) Name Iden- Description Factory Attrib tifier set value -ute DI function selection 0: For conducting the emptiness adjustment 1: For counting the number of wafer processing times Volume/level display 0: Volume display...

  • Page 38: Troubleshooting

    6. TROUBLESHOOTING WARNING To prevent electric shock or instrument failure, always turn off the system power before replacing the instrument. To prevent electric shock or instrument failure, always turn off the power before mounting or removing the instrument. To prevent electric shock or instrument failure, do not turn on the power until all the wiring is completed.
  • Page 39 6. TROUBLESHOOTING Continued from the previous page. Problem Probable cause Solution No response Error in the data format Reexamine the communication program Transmission line is not set to the receive state after data send (for RS-485) EOT return The specified identifier is invalid Confirm the identifier is correct or that with the correct function is specified.

  • Page 40: Ascii 7-Bit Code Table (Reference)

    7. ASCII 7-BIT CODE TABLE (REFERENCE) b5 to b7 b4 b3 b2 b1 ‘ ” & ’ < ¥ > ˜ IMR01C02-E3...
  • Page 41 The first edition: OCT.1999 The third edition: MAY 2001...
  • Page 42 RKC INSTRUMENT INC. HEADQUARTERS: 16-6, KUGAHARA 5-CHOME, OHTA-KU TOKYO 146-8515 JAPAN PHONE: 03-3751-9799 (+81 3 3751 9799) E-mail: info@rkcinst.co.jp FAX: 03-3751-8585 (+81 3 3751 8585) IMR01C02-E3 MAY 2001...

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