RKC INSTRUMENT FAREX SR MINI SYSTEM Communication Instruction Manual
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RKC INSTRUMENT FAREX SR MINI SYSTEM Communication Instruction Manual

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FAREX SR Mini SYSTEM
FAREX
SR Mini
SYSTEM
Communication
Instruction Manual
IMSRM04-E8
RKC INSTRUMENT INC.
®

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Summary of Contents for RKC INSTRUMENT FAREX SR MINI SYSTEM

  • Page 1 FAREX SR Mini SYSTEM FAREX SR Mini SYSTEM Communication Instruction Manual IMSRM04-E8 RKC INSTRUMENT INC. ®...
  • Page 2 All Rights Reserved, Copyright  1994, 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. SPECIFICATIONS..............1 1.1 Control Unit .....................1 1.2 OPM, OPM Z-191 and OPM Z-191 [CE/UL/CSA Conformed] ......2 1.3 OPL, OPL [CE/UL/CSA Conformed] ...............3 1.4 OPM-H ......................4 1.5 Terminal Voltage and Signal Logic..............5 2. CONNECTING...............6 2.1 Connection Block Diagram ................7 2.1.1 When connecting control unit with host computer directly........
  • Page 6 Page 4. COMMUNICATION PROTOCOL ........25 4.1 Polling......................25 4.1.1 Polling procedure....................26 4.1.2 Polling procedure example (When the host computer requests data)....29 4.2 Selecting......................30 4.2.1 Selecting procedure..................30 4.2.2 Selecting procedure (When the host computer sends data) ......32 4.3 Communication Data Configuration ..............33 4.4 Examples of Selecting and Polling Check Programs ........34 5.

  • Page 7: Specifications

    1. SPECIFICATIONS 1.1 Control Unit Communication interface: Based on RS-422A, EIA standard Based on RS-232C, EIA standard (Specify when ordering.) Communications modes: 4-wire system, multi-drop connection (RS-422A) Point-to-point connection (RS-232C) Maximum connections: 16 units (RS-422A) 1 unit (RS-232C) Synchronous method: Start/stop synchronous type Communication speed: 2400 bps, 4800 bps, 9600 bps, 19200 bps (Any can be selected)

  • Page 8: Opm, Opm Z-191 And Opm Z-191 [Ce/Ul/Csa Conformed]

    1. SPECIFICATIONS 1.2 OPM, OPM Z-191 and OPM Z-191 [CE/UL/CSA Conformed] Communication interface: Based on RS-422A, EIA standard Based on RS-485, EIA standard Based on RS-232C, EIA standard (Specify when ordering.) Communications modes: 4-wire system, multi-drop connection (RS-422A) 2-wire system, multi-drop connection (RS-485) Point-to-point connection (RS-232C) Maximum connections: 16 units (RS-422A, RS-485)

  • Page 9: Opl, Opl [Ce/Ul/Csa Conformed]

    1. SPECIFICATIONS 1.3 OPL, OPL [CE/UL/CSA Conformed] Communication interface: Based on RS-422A, EIA standard Based on RS-485, EIA standard Based on RS-232C, EIA standard (Specify when ordering.) Communications modes: 4-wire system, multi-drop connection (RS-422A) 2-wire system, multi-drop connection (RS-485) Point-to-point connection (RS-232C) Maximum connections: 16 units (RS-422A, RS-485) 1 unit (RS-232C)

  • Page 10: Opm-H

    1. SPECIFICATIONS 1.4 OPM-H Communication interface: Based on RS-422A, EIA standard Based on RS-485, EIA standard Based on RS-232C, EIA standard (Specify when ordering.) Communications modes: 4-wire system, multi-drop connection (RS-422A) 2-wire system, multi-drop connection (RS-485) Point-to-point connection (RS-232C) Maximum connections: 16 units (RS-422A, RS-485) 1 unit (RS-232C) Synchronous method:...

  • Page 11: Terminal Voltage And Signal Logic

    1. SPECIFICATIONS 1.5 Terminal Voltage and Signal Logic RS-422A and RS-485 Mark state Space state Name (Stop bit and signal 1) (Start bit and signal 0) T (A) −2 V Voltage between T (A) and T (B) Send data Voltage between T (A) and T (B) +2 V T (B) R (A)

  • Page 12: Connecting

    2. CONNECTING WARNING To prevent electric shock or instrument failure, turn off the power before connecting or disconnecting the instrument and peripheral equipment. Connect connectors correctly in the right position. If it is forcibly pushed in with pins in the wrong positions, the pins may be bent resulting in instrument failure.

  • Page 13: Connection Block Diagram

    2. CONNECTING 2.1 Connection Block Diagram 2.1.1 When connecting control unit with host computer directly The communication interface for control unit are RS-232C and RS-422A. When using the RS-422A, a maximum of 16 control units can be connected. However, when connecting to the computer which only has a RS-232C driver, conversion of the communication interface will be necessary.

  • Page 14: When Using Operation Panel

    2. CONNECTING 2.1.2 When using operation panel The communication interface for operation panel are RS-232C, RS-422A and RS-485. When using the RS-422A or RS-485, a maximum of 16 control units (OPC/OPC-H: 32 control units) can be connected. However, when connecting to the computer which only has a RS-232C driver, conversion of the communication interface will be necessary.

  • Page 15: Connection Between The Control Unit And A Host Computer

    2. CONNECTING 2.2 Connection Between the Control Unit and a Host Computer 2.2.1 When the dedicated cable is not used RS-422A Connection by the Paired wire modular connector Host computer or RS-232C/RS-422A converter RS-422A PCP module R(A) T(A) R(B) T(B) T(B) T(B) T(A)

  • Page 16: When Using The Dedicated Cable

    2. CONNECTING 2.2.2 When using the dedicated cable RS-422A RS-232C/RS-422A converter Control unit Connect to terminal block RS-422A Connect to the modular connector on the PCP module [COM.PORT1]. Ferrite core RS-232C Connect according to the label names as they are without crossing Host computer the wires.

  • Page 17: Connection Between The Operation Panel And A Host Computer

    2. CONNECTING 2.3 Connection Between the Operation Panel and a Host Computer 2.3.1 OPL or OPL [CE/UL/CSA Conformed] connection Modular cable pin numbers 1 to 6 Operation Control panel unit 100 to 240 V AC [OPL-A ∗ ] Control unit Connect to the modular connector on the PCP module [COM.PORT1].
  • Page 18 2. CONNECTING RS-422A Pin number and signal name Signal Direction Pin No. Mark Name Operation panel Host computer T(A) Send data T(B) Send data Ground for signal R(A) Receive data R(B) Receive data Contents of communication cable wiring Paired wire Operation panel Host computer T (A)
  • Page 19 2. CONNECTING RS-232C Pin number and signal name Signal Direction Pin No. Mark Name Operation panel Host computer SD (TXD) Send data RD (RXD) Receive data SG (GND) Ground for signal Contents of communication cable wiring Operation panel Host computer RS-232C SD (TXD) SD (TXD)

  • Page 20: Opm Or Opm Z-191 Connection

    2. CONNECTING 2.3.2 OPM or OPM Z-191 connection Operation panel Host computer RS-422A Specify when ordering RS-485 RS-232C Connect to the Connect to the host communication communication connector [HOST] connector Connector pin numbers Connector used: SDBB-25S (Manufactured by HIROSE ELECTRIC CO.,LTD.) The customer must prepare the communication cables.
  • Page 21 2. CONNECTING RS-485 Pin number and signal name Signal Direction Pin No. Mark Name Operation panel Host computer T/R(A) Send data/Receive data T/R(B) Send data/Receive data Ground for signal Contents of communication cable wiring Paired wire Operation panel Host computer TXR/RXD T/R (A) TXR/RXD...

  • Page 22: Opm Z-191 [Ce/Ul/Csa Conformed] Connection

    2. CONNECTING 2.3.3 OPM Z-191 [CE/UL/CSA Conformed] connection The connector for the connection with operation Operation panel panel is attached to this instrument. Host computer RS-422A Specify when ordering RS-485 RS-232C Ferrite cores Connect to the Connect to the host communication communication connector [HOST] connector...
  • Page 23 2. CONNECTING RS-485 Pin number and signal name Signal Direction Pin No. Mark Name Operation panel Host computer T/R(A) Send data/Receive data T/R(B) Send data/Receive data Ground for signal Contents of communication cable wiring Paired wire Operation panel Host computer TXR/RXD T/R (A) TXR/RXD...

  • Page 24: Oph Z-191 Connection

    2. CONNECTING 2.3.4 OPM-H Z-191 connection The connector for the connection with operation panel is attached to this instrument. Operation panel Host computer RS-422A Specify when ordering RS-485 RS-232C Connect to the Connect to the host communication communication connector [HOST] connector Connector used: SDEB-9P Connector pin numbers...
  • Page 25 2. CONNECTING RS-485 Pin number and signal name Signal Direction Pin No. Mark Name Operation panel Host computer T/R(A) Send data/Receive data T/R(B) Send data/Receive data Ground for signal Contents of communication cable wiring Paired wire Operation panel Host computer TXR/RXD T/R (A) TXR/RXD...

  • Page 26: Setting For Communication

    3. SETTING FOR COMMUNICATION In order to make communication between the SR Mini HG SYSTEM and the host computer, it is necessary to set the communication speed, data configuration and address. 3.1 When Connecting Control Unit with Host Computer Directly Host communication setting (data configuration, communication speed, unit address, etc.) are to be set by the PCP module of the control unit.
  • Page 27 3. SETTING FOR COMMUNICATION 2. Set the desired data configuration and communication speed by the dip switches located in the PCP module. Upper section View from the rear with the mother block removed. Data configuration Communication speed 8-bit non parity 2400 bps 7-bit even parity 4800 bps...

  • Page 28: When Using Operation Panel

    3. SETTING FOR COMMUNICATION 3.2 When Using Operation Panel The host communication setting between the operation panel and host computer is made (on these operation panel and host computer); the communication setting between the operation panel and control unit is made (on these operation panel and control unit) and computer/local selection is made (on the operation panel).

  • Page 29: Between Operation Panel And Control Unit Communication Setting

    3. SETTING FOR COMMUNICATION 3.2.2 Between operation panel and control unit communication setting Set the same communication setting to both the control unit and connecting operation panel. Operation panel Communication setting (data configuration, communication speed, etc.) are to be set on the screen of the operation panel.

  • Page 30: Computer/Local Transfer

    3. SETTING FOR COMMUNICATION 3.2.3 Computer/Local transfer SR Mini HG SYSTEM has two communication modes: local mode and computer mode. The host computer can perform only monitoring (polling) in local mode. In computer mode, it can perform monitoring and setting (selecting). These computer/local transfer can be selected on the screen of the operation panel.

  • Page 31: Communication Protocol

    4. COMMUNICATION PROTOCOL To establish the data link, the polling/selecting method is employed. The basic procedure follows ANSI X 3.28 subcategory 2.5, B1 and JIS basic data transmission control. For selecting, fast selecting is employed. In the polling/selecting method, the device is entirely controlled by the host computer to allow only data transfer with the host computer.

  • Page 32: Polling Procedure

    4. COMMUNICATION PROTOCOL 4.1.1 Polling procedure (1) Data link initialize In order to initialize the data link before sending the polling sequence, send [EOT] from the host computer. (2) Polling sequence send Send the polling sequence from the host computer in the following format. Address Identifier Address...
  • Page 33 4. COMMUNICATION PROTOCOL [STX] Transmission control character showing the beginning of the text (identifier and data). Identifier A code which identifies the data to be sent to the host computer. It is expressed using a 2-digit alphanumeric ASCII code. For details on the identifiers, see 5. COMMUNICATION IDENTIFIERS. Data Data which is indicated by an identifier of this device, consisting of channel Nos., data, etc.
  • Page 34 4. COMMUNICATION PROTOCOL (4) End of data send by this device (EOT send) This device sends [EOT] in the following cases to terminate the data link. When there is no specified identifier When the specified identifier is not valid When an error exists in the data format When all data have been sent (5) No response of this device If the polling sequence is not received correctly (if the address differs or if there is an error in the...

  • Page 35: Polling Procedure Example (When The Host Computer Requests Data)

    4. COMMUNICATION PROTOCOL 4.1.2 Polling procedure example (When the host computer requests data) Normal transmission Host computer send Host computer 04H 30H 30H 30H 31H 53H 31H 05H … Identifier Operatio Unit n panel address 02H 53H 31H 30H 31H 20H 20H 34H 30H 30H 2EH 30H 03H 67H address* Polling address...

  • Page 36: Selecting

    4. COMMUNICATION PROTOCOL 4.2 Selecting Selecting is an operation in which the host computer selects one set from among the devices multi- drop connected and then of recommending data receive. The selecting procedure is as follows. As this device employs fast selecting, data is sent continuously to the selected address. Host computer SR Mini SYSTEM send...
  • Page 37 4. COMMUNICATION PROTOCOL (3) Data send Send data in the following formats following the selecting sequence. The data format is the same as that of polling. Identifier Data Identifier Data , see 4.1 Polling. If the length of send data (from [STX] to [BCC]) exceeds 128 bytes, it is divided into blocks by [ETB].

  • Page 38: Selecting Procedure (When The Host Computer Sends Data)

    4. COMMUNICATION PROTOCOL 4.2.2 Selecting procedure example (When the host computer sends data) The data (Input range, decimal point etc.) should be conformed to the specifications of the instruments to be used. (Above example is with 1 digit below decimal point). The SR Mini HG SYSTEM sends [NAK] if the receiving of different data to specification.

  • Page 39: Communication Data Configuration

    4. COMMUNICATION PROTOCOL 4.3 Communication Data Configuration Description of data (Transmission/receive data structure) ......................Data Part of the data above is shown below. Data length 6 digits 1 0 0 . Identifier Channel Data Channel Data Channel Data Space Comma Space Space Data length is 6 digits fixed.

  • Page 40: Examples Of Selecting And Polling Check Programs

    4. COMMUNICATION PROTOCOL 4.4 Examples of Selecting and Polling Check Programs The following is the sample program for NEC PC-9800 series computers in BASIC language for carrying out polling and selecting checking by RS-422A (4-wire system) or RS-232C specification. Please be noted that there will be some differences in the computer languages according to the type of computer.
  • Page 41 4. COMMUNICATION PROTOCOL 1360 *ETXRX 1370 DT$=DT$+K$ 1380 BCCRX$=INPUT$(1,#1) 1390 BCCRX=ASC(BCCRX$) BCC checking 1400 GOSUB *BCCCH 1410 IF BCC<>BCCRX THEN GOSUB *NAKTX 1420 IF BCC<>BCCRX THEN GOSUB *RXDT GOTO *J10 1430 ' 1440 PRINT "Data has been correctly received" Display of received data and 1450 PRINT "Received data=";DT$ : END closing of RS-232C circuit...
  • Page 42 4. COMMUNICATION PROTOCOL Example of temperature set values selecting checking program 1000 '-------------------- Identifier setting ---------------------- 1010 ID$="S1" Identifier setting 1020 ' 1030 '--------------- Communications initial setting --------------- 1040 CM$="N81NN" Communications data configuration setting 1050 STX$=CHR$(&H2) : EOT$=CHR$(&H4) : ENQ$=CHR$(&H5) Communications character setting 1060 ACK$=CHR$(&H6) : NAC$=CHR$(&H15): ETX$=CHR$(&H3) 1070 OPEN "COM1:"+CM$ AS #1...
  • Page 43 4. COMMUNICATION PROTOCOL 1450 ' 1460 *BCCCH 1470 FOR II=1 TO LEN(DT$) BCC calculation 1480 BCCA$=MID$(DT$,II,1) 1490 IF BCCA$=STX$ THEN BCC=0 : GOTO *IINEXT 1500 BCC=BCC XOR ASC(BCCA$) 1510 *IINEXT 1520 NEXT II 1530 RETURN (The items after the mark of " ' " can be omitted.) Setting of the receiving waiting time : If timeout occurs in using high speed computer (Except no response), the numeral value of 500 in the program should be changed to an appropriately-sized numeral value.

  • Page 44: Communication Identifiers

    5. COMMUNICATION IDENTIFIERS 5.1 List of Communication Identifiers ( Attributes RO : Read only R/W : Read and Write WO : Write only) Factory Refer- Iden- Attri- ence Name Digits Data range tifier bute value page − Measured value (PV) Within input range input −...
  • Page 45 5. COMMUNICATION IDENTIFIERS Continued from the previous page Factory Refer- Iden- Attri- ence Name Digits Data range tifier bute value page Deadband/Overlap -10.0 to +10.0 % of span Control response 0: Slow 1: Medium parameters 2: Fast First alarm set value Within input range or span range Second alarm set value...
  • Page 46 5. COMMUNICATION IDENTIFIERS Continued from the previous page Factory Refer- Iden- Attri- ence Name Digits Data range tifier bute value page 1 to 10 °C or 1 to 20 °F Temperature rise 10°C completion range 20°F Temperature rise 0: Unused 1: Used completion trigger Temperature rise 0 to 360 min.

  • Page 47: Identifiers Function Explanation

    5. COMMUNICATION IDENTIFIERS 5.2 Identifiers Function Explanation Identifier M1: Measured value (PV) input Read only identifier which defines the input measured value from the control unit. Data range: Within input range Polling example: Host computer send Host computer send 4 0 0 Operation Identifier Unit...
  • Page 48 5. COMMUNICATION IDENTIFIERS Identifier B1: Burnout alarm condition Read only identifier which defines each channel burnout condition of the control unit. Data range: 0: OFF 1: ON Polling example: Host computer send Host computer send Space Comma Next to identifier Operation Unit Identifier...
  • Page 49 5. COMMUNICATION IDENTIFIERS Identifier AC: Heater break alarm (HBA) Read only identifier which defines the heater break alarm condition. Data range: 0: OFF 1: ON Polling example: Host computer send Host computer send Space Comma Next to identifier A C 0 1 Operation Unit Identifier...
  • Page 50 5. COMMUNICATION IDENTIFIERS TIO module CT module TIO-D TIO-B CT input measured value 1 CT input measured value 2 (Identifier: M3), (Identifier: M4), Heater break alarm set value 1 Heater break alarm set value 2 (Identifier: A3) (Identifier: A4) When sending and receiving data, note that identifiers M3 and A3 will be the channel numbers of the TIO module and that M4 and A4 will be the channel numbers of the CT module.
  • Page 51 5. COMMUNICATION IDENTIFIERS Polling example: Host computer send Host computer send Operation Unit Identifier panel address address* Next to identifier Channel Channel Data (6 digits) Identifier Space Comma SR Mini SYSTEM send * Omit the operation panel address when the connection is made directly to control unit. Selecting example (Heater break alarm set value 1 and Heater break alarm set value 2 only): Host computer send Host computer send...
  • Page 52 5. COMMUNICATION IDENTIFIERS Identifier HE: Temperature rise completion condition Identifier HD: Temperature rise completion range Identifier HS: Temperature rise completion trigger Identifier T3: Temperature rise completion soak time Identifier used for each setting related to the presence or absence of the temperature rise completion trigger function.
  • Page 53 5. COMMUNICATION IDENTIFIERS Temperature rise completion soak time Time (min.) until the temperature rise completion state is output after all channels reach the temperature set value. Soak time Temperature set value or Temperature rise completion range Temperature Temperature rise start rise completion (All channels simultaneously) The a) channel has reached the temperature rise completion range.
  • Page 54 5. COMMUNICATION IDENTIFIERS Polling example (Temperature rise completion range): Host computer send Host computer send H D 0 1 Operation Identifier Unit panel address address* Next to identifier Channel Channel Data (6 digits) Identifier Space Comma SR Mini SYSTEM send * Omit the operation panel address when the connection is made directly to control unit.
  • Page 55 5. COMMUNICATION IDENTIFIERS Polling example (Temperature rise completion soak time): Host computer send Host computer send Next to identifier Operation Unit Identifier panel address address* Data (6 digits) Identifier SR Mini SYSTEM send * Omit the operation panel address when the connection is made directly to control unit. Selecting example (Temperature rise completion soak time): Host computer send Host computer send...
  • Page 56 5. COMMUNICATION IDENTIFIERS Identifier ER: Error code If the system abnormality occurs during operation or power on, error data is transmitted from the control unit or Operation Panel. Error code data description Data Description Operations normal Back-up data check error RAM read/write error System structure error Internal communications error...
  • Page 57 5. COMMUNICATION IDENTIFIERS Identifier G1: PID/AT transfer Identifier which defines the transfer to either PID (Normal control) and AT (Autotuning) mode. Data range: 0: PID control operation 1: Autotuning execution operation Polling example: Host computer send Host computer send Space Comma Next to identifier G 1 0 1...
  • Page 58 5. COMMUNICATION IDENTIFIERS Autotuning conditions Autotuning (AT) is the function which automatically measures, calculates and sets the optimum PID constants according to the set temperature. The following is the conditions necessary to carry out autotuning and the conditions which will cause the autotuning to stop. Conditions necessary for autotuning: The autotuning should be executed after satisfying all of the following conditions : (1) Operation mode conditions:...
  • Page 59 5. COMMUNICATION IDENTIFIERS Identifier S1: Temperature set value Identifier which defines the temperature set value. Data range: Within input range (Within setting limiter) Polling example: Host computer send Host computer send S 1 0 1 Operation Identifier Unit panel address address* Next to identifier Channel...
  • Page 60 5. COMMUNICATION IDENTIFIERS Identifier P1: Heat-side proportional band Identifier P2: Cool-side proportional band Identifier I1: Integral time Identifier D1: Derivative time Identifier V1: Overlap/Deadband Identifier which defines the temperature control parameter. P1 : Heat-side proportional band, P2 : Cool-side proportional band Data range: 0.1 to 1000.0 % of span I1 : Integral time Data range: 1 to 3600 sec.
  • Page 61 5. COMMUNICATION IDENTIFIERS Identifier CA: Control response parameters Identifier which defines the control response parameters. Data range: 0: Slow 1: Medium 2: Fast Polling example: Host computer send Host computer send Space Comma Next to identifier C A 0 1 Operation Identifier Unit...
  • Page 62 5. COMMUNICATION IDENTIFIERS Identifier A1: First alarm set value Identifier A2: Second alarm set value Identifier which defines each channel alarm set value. Data range: Within input range or span range Polling example: Host computer send Host computer send Operation Unit Identifier panel...
  • Page 63 5. COMMUNICATION IDENTIFIERS Identifier EI: Operation mode transfer Changes each channel operation mode of TIO module. [Data range] 0: Unused mode If set to "Unused," no control, monitor or alarm monitor is performed. Use this when replacing the module, or during equipment maintenance and inspection. 1: Monitor mode If set to "Monitor,"...
  • Page 64 5. COMMUNICATION IDENTIFIERS Identifier T0: Heat-side proportioning cycle Identifier T1: Cool-side proportioning cycle Identifier which defines the heat-side proportioning cycle and cool-side proportioning cycle. Data range: 1 to 100 sec. Setting will be invalid in continuous output of current and voltage. Cool-side proportioning cycle: Setting will be invalid in heat action.
  • Page 65 5. COMMUNICATION IDENTIFIERS Identifier PB: PV bias Identifier which defines data to forcibly change (increase or decrease in displayed value) the measured value (PV). The value set in the PV bias is added to the actual input value to correct the input value. The PV bias is used to correct the individual variations in the sensors or when there is difference between the measured values (PV) of other instruments.
  • Page 66 5. COMMUNICATION IDENTIFIERS Identifier SR: Control Run/Stop Identifier which defines data to start or stop control. Data range: 0: Stop 1: Run Polling example: Host computer send Host computer send Next to identifier S R 1 Operation Unit Identifier panel address address* Identifier...
  • Page 67 5. COMMUNICATION IDENTIFIERS Identifier IN: Initialize setting mode Identifier which defines data to select initialize mode (extended communication). When you change to the initialize setting mode, the contents of the identifiers in the separate supplementary information can be changed or switched. For more details, see the supplementary information in this manual.
  • Page 68 5. COMMUNICATION IDENTIFIERS Identifier ZA: Memory area number Identifier which defines the memory area number of the control unit. The memory area function is the function which stores the parameter values such as the set value (SV) etc. in up to 8 memories. When required, read in the appropriate 1 memory out of the 8 memories and to use its parameters for the control.
  • Page 69 5. COMMUNICATION IDENTIRIERS Identifier AR: Alarm interlock release Identifier which release the alarm interlock. Data range: 1: Release (1 only) Selecting example: Host computer send Host computer send A R 1 Operation Data Unit Identifier panel (1 digit) address address* SR Mini SYSTEM send * Omit the operation panel address when the connection is made directly to control unit.
  • Page 70 5. COMMUNICATION IDENTIFIERS Identifier J1: Auto/Manual transfer Identifier ON: Manual output value Identifier which defines auto (Normal automatic control operation) or manual (Manual operation) transfer and control output value during manual operation. When you switch over to the manual mode, set the control output value with the manually output value (Identifier: ON).
  • Page 71 5. COMMUNICATION IDENTIRIERS Polling example (Manual output value): Host computer send Host computer send O N 0 1 Operation Unit Identifier panel address address* Next to identifier Channel Channel Data (6 digits) Identifier Space Comma SR Mini SYSTEM send * Omit the operation panel address when the connection is made directly to control unit. Selecting example (Manual output value): Host computer send Host computer send...
  • Page 72 5. COMMUNICATION IDENTIFIERS Identifier AP: LBA alarm condition Read only memory which defines the LBA (Loop break alarm) state Data range: 0: OFF 1: ON Polling example: Host computer send Host computer send Space Comma Next to identifier A P 0 1 Operation Unit Identifier...
  • Page 73 5. COMMUNICATION IDENTIRIERS Selecting example (LBA use selection): Space Comma Host computer send Host computer send H P 0 1 Channel Channel Operation Identifier Data Unit panel address (1 digit) address* SR Mini SYSTEM send * Omit the operation panel address when the connection is made directly to control unit. Polling example (LBA time, LBA deadband): Host computer send Host computer send...
  • Page 74 5. COMMUNICATION IDENTIFIERS Control loop break alarm (LBA) function The LBA function detects the abnormality in the control loop such as the break of load (heater), the abnormality of external operating unit (magnet relay etc.), the break of input (sensors), etc. When the output reaches 100 % or 0 % (or output limiter low limit) the LBA function starts to monitor periodically the change of measured value (PV) at previously set time and detects the break of heater and input.
  • Page 75 5. COMMUNICATION IDENTIRIERS (2) Detected errors LBA output is turned on if any of the following errors are detected. Input circuit Computation Output circuit Actuator Controlled object Error activating LBA function Controlled object trouble .. Heater break, no power supply, incorrect wiring, etc. Sensor trouble ....
  • Page 76 5. COMMUNICATION IDENTIFIERS (4) Precautions for LBA The LBA function detects the occurrence of an error in the control loop, but cannot locate the error point. Therefore in this case, check each control system in order. No LBA function is activated in the following cases. -While autotuning is being executed -If operation mode is set to any mode other than "Normal."...

  • Page 77: Troubleshooting

    6. TROUBLESHOOTING 6.1 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 78 6. TROUBLESHOOTING In this section, an explanation is given of the presumed causes and measures of general problems when transmission can not be carried out correctly. When abnormalities are suspected in the control, operation, operation panel or control unit (Hardware related problems), see the troubleshooting items in the appropriate separate Operation Panel Instruction Manual or Hardware Instruction Manual.

  • Page 79: Error Code Descriptions (Identifier: Er)

    6. TROUBLESHOOTING 6.2 Error Code Descriptions (Identifier: ER) When the following errors have occurred, replace or request repair for the controller in which the error has occurred. (The module that has the FAIL lamp lit.) Error code data Data Description Explanation Operations normal Back-up data check error...

  • Page 80: Ascii Code Table

    7. ASCII CODE TABLE ASCII 7-bit code table b5 to b7 b4 b3 b2 b1 ‘ ” & ’ < ¥ > ˜ IMSRM04-E8...
  • Page 81 The 1st edition: Aug. 1994 The 8th edition: Oct. 1999...
  • Page 82 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) IMSRM04-E8 OCT.1999...

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