Multi-point Digital Controller MA900/MA901 Communication Instruction Manual ® RKC INSTRUMENT INC.
!" Modbus is a registered trademark of Schneider Electric. !" Company names and product names used in this manual are the trademarks or registered trademarks of the respective companies. All Rights Reserved, Copyright 2001, RKC INSTRUMENT INC.
Thank you for purchasing this 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. SYMBOLS WARNING : This mark indicates precautions that must be taken if there is danger of electric shock, fire, etc., which could result in loss of life or injury.
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.
CONTENTS Page 1. OUTLINE ...............................................................................1 2. SPECIFICATIONS.................................................................2 3. WIRING .................................................................................5 4. SETTING ...............................................................................8 4.1 Transfer to Setup Setting Mode ......................................................................8 4.
Page 6.6 Message Format............................................................................................49 6.6.1 Read holding registers [03H] ............................................................................49 6.6.2 Preset single register [06H] ..............................................................................50 6.6.3 Diagnostics (loopback test) [08H] .....................................................................51 6.6.4 Preset multiple registers [10H]...............
1. OUTLINE Multi-point Digital Controller MA900/MA901 interfaces with the host computer via Modbus or RKC communication protocols. In RKC communication, there are the data format (multi-point mode) in which the MA900/MA901 is used as a multi-point controller (for the MA900: 4 channels and for the MA901: 8 channels) and that (single mode) used as multidrop-connected with a single controller. In addition, the three types of communication interfaces are available: RS-422A, RS-485 and RS-232C.
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2. SPECIFICATIONS Signal logic: RS-422A, RS-485 Signal voltage Logic V (A) - V (B) ≥ 2 V 0 (SPACE) V (A) - V (B) ≤ -2 V 1 (MARK) Voltage between V (A) and V (B) is the voltage of (A) terminal for the (B) terminal.
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3. WIRING WARNING ! To prevent electric shock or instrument failure, do not turn on the power until all the wiring is completed. Connection to the RS-422A port of the host computer (master) !" #"Communication terminal number and signal details Terminal No.
3. WIRING Connection to the RS-485 port of the host computer (master) !" #"Communication terminal number and signal details Terminal No.
3. WIRING Connection to the RS-232C port of the host computer (master) !" #"Communication terminal number and signal details Terminal No.
4. SETTING To establish communication parameters between host computer (master) and MA900/MA901 (slave), it is necessary to set the device address (slave address), communication speed, data bit configuration and interval time on each MA900/MA901 (slave) in the setup setting mode. Power ON Input Type/Input Range Display (Display for approx.
4. SETTING 4.2 Setting the Communication Parameters To select parameters in setup setting mode, press the SET key. The parameters are displayed and sequenced in the order of device address (slave address), Add, communication speed, bPS, data bit configuration, bIT and interval time set value, InT. Setting procedure !" Setting procedure vary depending on the communication parameter. • Device address Add, interval time InT Operate UP, DOWN and
4. SETTING Description of each parameters !" Symbol Name Device address (Slave address) Setting range 0 to 99 (See P.16, 17) (Add) (bPS) (bIT) Communication 240: 2400 bps speed 480: 4800 bps 960: 9600 bps 1920: 19200 bps Data bit See data bit configuration configuration table Interval time * 0 to 250 ms (InT) Description Set it not to duplication in multidrop connection. If the slave address is set to 0 in Modbus, two-way communication cannot be performed.
4. SETTING Setting procedure example !" MA900 is used in the below figures for explanation, but the same setting procedures also apply to MA901. 1. Go to the setup setting mode so that device address (slave address), Add, is displayed. Present set value is displayed, and the least significant digit light brightly. CH PV AREA SV CH SET R/S MA900 Device address setting (Slave address) 2. Set the device address. Press the UP key to enter 5 at the least significant digit.
4. SETTING 4. Press the UP key to enter 1 at the tens digit. CH PV AREA SV CH SET R/S MA900 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/SV monitor mode and the value set here returns to that before the setting is changed. CH PV AREA SV CH SET R/S MA900 Communication speed setting 6.
4. SETTING 4.3 Communication Requirements Processing times during data send/receive !" The MA900/MA901 requires the following processing times during data send/receive.
4. SETTING RS-485 (2-wire system) send/receive timing !" The sending and receiving of RS-485 communication is conducted through two wires; consequently, the transmission and reception of data requires precise timing.
5. RKC COMMUNICATION PROTOCOL The MA900/MA901 (hereafter, called controller) 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 this controller). !"The polling/selecting procedures are a centralized control method where the host computer controls the entire process.
5. RKC COMMUNICATION PROTOCOL 5.1.1 Polling procedures (1) Data link initialization Host computer sends EOT to the controllers to initiate data link before polling sequence. (2) Data sent from host computer - Polling sequence The host computer sends the polling sequence in the following two types of formats: • Format in which no memory area number is specified, and • Format in which the memory area number is specified.
5. RKC COMMUNICATION PROTOCOL • Single mode This data represents the device address and channel number of the controller to be polled. When polling any identifier without the corresponding channel number, the channel number is ignored. Each address is calculated as follows.
5. RKC COMMUNICATION PROTOCOL 3. Identifier (2 digits) The identifier specifies the type of data that is requested from the controller. For details, see 5.3 Communication Identifier List (P. 34). 4. ENQ The ENQ is the transmission control character that indicates the end of the polling sequence. The ENQ must be attached to the end of the identifier. The host computer then must wait for a response from the controller.
5. RKC COMMUNICATION PROTOCOL 4. ETX ETX is a transmission control character used to indicate the end of text transmission. 5. BCC BCC (Block Check Character) detects error using horizontal parity and is calculated by horizontal parity (even number). Calculation method of BCC: Exclusive OR all data and characters from STX through ETX, not including STX.
5. RKC COMMUNICATION PROTOCOL (8) No response from host computer When the host computer does not respond within approximately three seconds after the controller sends data, the controller sends EOT to terminate the data link. (Time out: 3 seconds) (9) Indefinite response from host computer The controller sends EOT to terminate the data link when the host computer response is indefinite.
5. RKC COMMUNICATION PROTOCOL 5.1.2 Polling procedure example (Multi-point mode) Four channels specification of MA900 is used in the procedure example for explanation, but the same setting procedures also apply to MA901. However, the 8-channel specification applies to the MA901. Therefore, refer to procedure examples by replacing the 4-channel specification for the MA900 with the 8-channel specification for the MA901.
5. RKC COMMUNICATION PROTOCOL (2) When the memory area number is specified !"Normal transmission Host computer send E O 0 T 0 K 1 S E 1 N Q Controller send S T S X Identifier Device address Memory area number 1 0 1 1 0 Identifier 0 . 0 , 0 2 2 0 Data 0 . 0 , Continue to *1 Data Channel number Comma Space Channel number Space Host computer send *1 Controller send 0 3 3 0 0 . 0 , 0 Host computer send A C K 4 4 0 0 .
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5. RKC COMMUNICATION PROTOCOL 5.1.3 Polling procedure example (Single mode) MA900 is used in the procedure example for explanation, but the same setting procedures also apply to MA901. (1) When no memory area number is specified !"Normal transmission Host computer send E O 0 T Host computer send Host computer send A C K E O T E 0 M 1 N Q S T M 1 X Address 0 1 0 0 . 0 E B T C X C S T M 2 X 0 0 5 0 .
5. RKC COMMUNICATION PROTOCOL 5.2 Selecting Selecting is the action where the host computer requests one of the connected controllers to receive data. An example of the selecting procedure is shown below: Controller send Host computer send E O T [Address] (1) (2) S T [ X ][ E ] [Data] T [BCC] X (3) Identifier Memory area number No response (6) A C K (4) N A K (5) Host computer send E O T (7) 5.2.
5. RKC COMMUNICATION PROTOCOL Continued from the previous page.
5. RKC COMMUNICATION PROTOCOL 1. Memory area number (2 digits) This is the identifier to specify the memory area number. It is expressed by affixing “K” to the head of each memory area number (from 1 to 8). In addition, if the memory area number is assigned with “K0,” this represents that control area is specified. The memory area now used for control is called “Control area.
5. RKC COMMUNICATION PROTOCOL #"About numerical data The data that receipt of letter is possible • Data with numbers below the decimal point omitted or zero-suppressed data can be received. (Number of digits: Within 6 digits) When data send with -001.5, -01.5, -1.5, -1.50, -1.500 at the time of -1.5, controller can receive a data.
5. RKC COMMUNICATION PROTOCOL (5) NAK (Negative acknowledge) If the controller does not receive correct data from the host computer, it sends a negative acknowledgment NAK to the host computer. Corrections, such as re-send, must be made at the host computer. The controller will send NAK in the following cases: • When an error occurs on communication the line (parity, framing error, etc.
5. RKC COMMUNICATION PROTOCOL 5.2.2 Selecting procedure example (Multi-point mode) Four channels specification of MA900 is used in the procedure example for explanation, but the same setting procedures also apply to MA901. However, the 8-channel specification applies to the MA901. Therefore, refer to procedure examples by replacing the 4-channel specification for the MA900 with the 8-channel specification for the MA901.
5. RKC COMMUNICATION PROTOCOL (2) When the memory area number is specified !"Normal transmission Host computer send E O 0 T 0 S T K X 1 Device address S 1 0 1 0 1 0 0 . 0 0 2 0 4 4 0 0 0 . 0 . 0 , 0 Channel number 0 3 0 0 . 0 , Continue to *1 Space Host computer send 0 3 Comma Comma Space 0 2 Data Channel number Host computer send *1 0 Data Identifier Memory area number , E B T C X C S T K X 1 A 1 0 Host computer send E B ......
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5. RKC COMMUNICATION PROTOCOL 5.2.3 Selecting procedure example (Single mode) MA900 is used in the procedure example for explanation, but the same setting procedures also apply to MA901. (1) When no memory area number is specified !"Normal transmission Host computer send E O 0 T 0 Address S T S X 1 0 1 Identifier 0 0 Host computer send . 0 E B T C X C S T A X A C K Data 1 0 2 Identifier 0 0 .
5. RKC COMMUNICATION PROTOCOL 5.3 Communication Identifier List Reference to communication identifier list !" (1) (2) (3) Name Identifier No. of digits Model code Measured value (PV) Current transformer 1 input value ID M1 32 6 M2 Set value (SV) # S1 (4) (5) Data range (6) (7) Factory set value Attribute CH Display the model code Within input range. --------- RO RO − × 6 CTL6P: 0.0 to 30.0 A CTL12: 0.0 to 100.0 A ----- RO × 6 Within input range. 0 or 0.
5. RKC COMMUNICATION PROTOCOL Communication identifier list !" Name Identifier No. of digits Model code ID 32 Measured value (PV) M1 Current transformer 1 input value M2 Current transformer 2 input value M3 Data range Factory set value Attribute CH Display the model code ----- RO − 6 Within input range. ----- RO × 6 CTL6P: 0.0 to 30.0 A CTL12: 0.0 to 100.0 A ----- RO × (This item does not use in the MA901) Set value monitor MS 6 Within input range.
5. RKC COMMUNICATION PROTOCOL Continued form the previous page. Name Output status * Identifier No. of digits AJ 6 Data range 0 to 2047 Factory set value Attribute CH ----- RO − * The status of each output assigned to the controller is converted to the corresponding decimal data and then is sent to the host computer. Convert the decimal data sent from the controller to the corresponding binary data (bit image) to confirm the status.
5. RKC COMMUNICATION PROTOCOL Continued form the previous page. Name Identifier No. of digits Manipulated output value 1 O1 6 Cool-side manipulated output value O2 ER Data range Factory set value Attribute CH -5.0 to +105.0 % ----- RO × 1 0 to 5 ----- RO − L1 6 0 to 31 ----- RO − Memory area number selection 4 ZA 1 1 to 8 1 R/W − Set value (SV) ! S1 6 Within input range. 0 or 0.
5. RKC COMMUNICATION PROTOCOL Continued from the previous page. Name Identifier No. of digits Data range Factory set value Attribute CH ! A1 6 Process alarm, SV alarm 1: Same as input range Deviation alarm 1: -span to +span (Within -1999 to +9999 digits) Control loop break alarm (LBA): 0.0 to 200.0 minutes (0.0: LBA OFF) Temperature input: 50 or 50.0 Voltage input: 5.0 Control loop break alarm: 8.
5. RKC COMMUNICATION PROTOCOL Continued from the previous page. Name Factory set value Attribute CH Process alarm, SV alarm 1: Same as input range Deviation alarm 1: -span to + span (Within -1999 to +9999 digits) Temperature input: 50 or 50.0 Voltage input: 5.0 R/W 2 × 6 0 (0.0) to span However, 9999 digits or less (0 or 0.0: ON/OFF action) Temperature input: 30 or 30.0 Voltage input: 3.
5. RKC COMMUNICATION PROTOCOL Continued from the previous page. Name Identifier No. of digits Setting change rate limiter ! HH 6 Used/unused of channels EI 1 RUN/STOP transfer 1 PID/AT selection SR 1 G1 1 PV bias PB 6 Digital filter F1 6 Proportioning cycle time 2, 3 T0 6 0 to 100 seconds (0: Digital filter OFF) 1 to 100 seconds Cool-side proportioning cycle time 3 T1 6 1 to 100 seconds TL 6 1 to 10 seconds ! Data range 0 (0.0) to span/min. (0 or 0.
5. RKC COMMUNICATION PROTOCOL Continued from the previous page. Name Identifier No.
5. RKC COMMUNICATION PROTOCOL Continued from the previous page. Name Identifier No. of digits EEPROM storage mode 1 EB 1 Data range 0: Backup mode (Set values are store to the EEPROM) Factory set value Attribute CH 0 R/W − ----- RO − 1: Buffer mode (No set values are store to the EEPROM) EEPROM storage status 2 1 EM 1 0: The content of the EEPROM does not coincide with that of the memory. 1: The content of the EEPROM coincides with that of the memory.
5. RKC COMMUNICATION PROTOCOL Continued from the previous page. Name Lock level 1 Lock level 2 Identifier No.
6. MODBUS COMMUNICATION PROTOCOL The master controls communication between master and slave. A typical message consists of a request (query message) sent from the master followed by an answer (response message) from the slave. When master begins data transmission, a set of data is sent to the slave in a fixed sequence. When it is received, the slave decodes it, takes the necessary action, and returns data to the master. 6.
6. MODBUS COMMUNICATION PROTOCOL 6.2 Function Code Function code contents Function code (Hexadecimal) Function Contents 03H Read holding registers Measured value (PV), alarm status, etc. 06H Preset single register Set value (SV), alarm set value, PID constants, PV bias, etc. (For each word) 08H Diagnostics (loopback test) Diagnostics (loopback test) 10H Preset multiple registers Set value (SV), alarm set value, PID constants, PV bias, etc.
6. MODBUS COMMUNICATION PROTOCOL 6.4 Slave Responses (1) Normal response • In the response message of the Read Holding Registers, the slave returns the read out data and the number of data items with the same slave address and function code as the query message. • In the response message of the Preset Single Resister, the slave returns the same message as the query message. • In the response message of the Diagnostics (loopback test), the slave returns the same message as the query message.
6. MODBUS COMMUNICATION PROTOCOL (3) No response The slave ignores the query message and does not respond when: • The slave address in the query message does not coincide with any slave address settings. • The CRC code of the master does not coincide with that of the slave. • Transmission error such as overrun, framing, parity and etc., is found in the query message. • Data time interval in the query message from the master exceeds 24 bit’s time. 6.
6. MODBUS COMMUNICATION PROTOCOL The flow chart of CRC-16 !" START FFFFH → CRC Register CRC Register ⊕ next byte of the message → CRC Register 0→n Shift CRC Register right 1 bit Carry flag is 1 No Yes CRC Register ⊕ A001H → CRC Register n+1→n No n>7 Yes No Is message complete ? Yes END The ⊕ symbol indicates an exclusive OR operation. The symbol for the number of data bits is n.
6. MODBUS COMMUNICATION PROTOCOL 6.6 Message Format 6.6.1 Read holding registers [03H] The query message specifies the starting register address and quantity of registers to be read. The contents of the holding registers are entered in the response message as data, divided into two parts: the high-order 8 bits and the low-order 8 bits, arranged in the order of the register numbers. Example: The contents of the three holding registers from 0000H to 0002H are the read out from slave address 2.
6. MODBUS COMMUNICATION PROTOCOL 6.6.2 Preset single register [06H] The query message specifies data to be written into the designated holding register. The write data is arranged in the query message with high-order 8 bits first and low-order 8 bits next. Only R/W holding registers can be specified. Example: Data is written into the holding register 00C8H of slave address 1.
6. MODBUS COMMUNICATION PROTOCOL 6.6.3 Diagnostics (loopback test) [08H] The master’s query message will be returned as the response message from the slave. This function checks the communication system between the master and slave. Example: Loopback test for slave address 1 Query message Slave address Function code Test code Data CRC-16 High Low High Low High Low 01H 08H 00H 00H 1FH 34H E9H ECH Test code must be set to 00.
6. MODBUS COMMUNICATION PROTOCOL 6.6.4 Preset multiple registers [10H] The query message specifies the starting register address and quantity of registers to be written. The write data is arranged in the query message with high-order 8 bits first and low-order 8 bits next. Only R/W holding registers can be specified. Example: Data is written into the two holding registers from 00C8H to 00C9H of slave address 1.
6. MODBUS COMMUNICATION PROTOCOL 6.7 Data Configuration 6.7.1 Data range The numeric range of data used in Modbus protocol is 0000H to FFFFH. Only the set value within the setting range is effective. FFFFH represents -1. Data processing with decimal points Data with decimal points !" #"Data with one decimal place The Modbus protocol does not recognize data with decimal points during communication.
6. MODBUS COMMUNICATION PROTOCOL Data whose decimal point’s presence and/or position depends on input range !" The position of the decimal point changes depending on the input range type because the Modbus protocol does not recognize data with decimal points during communication. The following data can have one of three decimal point positions: • No decimal point • One decimal place • Two decimal place For details, see 7. INPUT RANGE TABLES (P. 75).
6. MODBUS COMMUNICATION PROTOCOL 6.8 Communication Data List The communication data list summarizes names, descriptions, factory set values and attributes. Attribute (RO: Read only, R/W: Read and Write) The communication data whose name is marked with ! indicates that corresponding to the memory area. In case of Modbus communication, data are treated as binary data in communication. Name Data range Factory set value Attribute Measured value (PV) Within input range.
6. MODBUS COMMUNICATION PROTOCOL Continued form the previous page. Name Data range Factory set value Attribute Output status 1 0 to 2047 ----- RO DI status 2 0 to 31 ----- RO 1 The status of each output assigned to the controller is converted to the corresponding decimal data and then is sent to the host computer. Convert the decimal data sent from the controller to the corresponding binary data (bit image) to confirm the status.
6. MODBUS COMMUNICATION PROTOCOL Continued form the previous page. Name EEPROM storage status 1 Data range Factory set value Attribute 0: The content of the EEPROM does not coincide with that of the memory. ----- RO Within input range. ----- RO Within input range. 0 or 0.0 R/W 0 R/W Temperature input: 30 or 30.0 Voltage input: 3.0 R/W 1 to 1000 % of heat-side proportional band 100 R/W 3 1: The content of the EEPROM coincides with that of the memory.
6. MODBUS COMMUNICATION PROTOCOL Continued form the previous page. Name Alarm 1 Data range ! Alarm 2 3 Alarm 3 ! Heater break alarm 2 (HBA2) Factory set value Attribute Process alarm, SV alarm 1: Same as input range Deviation alarm 1: -span to +span (Within -1999 to +9999 digits) Temperature input: 50 or 50.0 Voltage input: 5.0 R/W 2 Control loop break alarm (LBA): 0.0 to 200.0 minutes (0.0: LBA OFF) Control loop break alarm: 8.
6. MODBUS COMMUNICATION PROTOCOL Continued form the previous page. Name Data range Proportioning cycle time 1, 2 1 to 100 seconds Cool-side proportioning cycle time 2 1 to 100 seconds (This item does not use Factory set value Attribute Relay contact output: 20 Voltage pulse/ triac output: 2 Relay contact output: 20 Voltage pulse/ triac output: 2 R/W R/W 3 in the MA901.
6. MODBUS COMMUNICATION PROTOCOL Continued from the previous page. Name Data range Factory set value Attribute 0 R/W 0 to 250 ms 10 R/W 0: Backup mode (Set values are store to the EEPROM) 0 R/W Data bit configuration 1 See data bit configuration table 2 Interval time 1 EEPROM storage mode 3 1: Buffer mode (No set values are store to the EEPROM) 1 The value changed becomes effective when the power is turned on again or when changed from STOP to RUN.
6. MODBUS COMMUNICATION PROTOCOL Continued from the previous page.
6. MODBUS COMMUNICATION PROTOCOL 6.9 Data Map 6.9.1 Reference to data map This data map summarizes the data addresses, channels and names that can be used with Modbus protocol. For details on each data range, see 6.8 Communication Data List (P. 55).
6. MODBUS COMMUNICATION PROTOCOL 6.9.
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6. MODBUS COMMUNICATION PROTOCOL Continued form the previous page.
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6. MODBUS COMMUNICATION PROTOCOL Continued form the previous page. Address CH 1465H (5221) 1466H (5222) 1467H (5223) 1468H (5224) 1469H (5225) ⋅⋅ ⋅ 148CH (5260) 148DH (5261) 148EH (5262) 148FH (5263) 1490H (5264) 1491H (5265) ⋅⋅ ⋅ 14A0H (5280) CH1 CH2 CH3 CH4 CH1 CH2 CH3 CH4 Name Alarm 2 Unused Alarm 3 Unused The accessible data (holding register) address range is from 0000H to 02EEH and 1388H to 14A0H.
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6. MODBUS COMMUNICATION PROTOCOL Continued from the previous page.
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6. MODBUS COMMUNICATION PROTOCOL Continued from the previous page.
7. INPUT RANGE TABLES Input Range Table 1 Input type Input range Code 0 to 200 °C 0 to 400 °C 0 to 600 °C 0 to 800 °C 0 to 1000 °C 0 to 1200 °C 0 to 1372 °C -199.9 to +300.0 °C * 0.0 to 400.0 °C 0.0 to 800.0 °C K 0 to 100 °C 0 to 300 °C 0 to 450 °C 0 to 500 °C 0.0 to 200.0 °C 0.0 to 600.0 °C Thermocouple -199.9 to +800.0 °C * 0 to 800 °F 0 to 1600 °F 0 to 2502 °F 0.0 to 800.0 °F 20 to 70 °F -199.9 to +999.9 °F * 0 to 200 °C 0 to 400 °C 0 to 600 °C 0 to 800 °C 0 to 1000 °C J 0 to 1200 °C -199.9 to +300.
7. INPUT RANGE TABLES Continued from the previous page. Input type Input range J R S Thermocouple B E N T 1 2 76 0 to 800 °F 0 to 1600 °F 0 to 2192 °F 0 to 400 °F -199.9 to +999.9 °F 1 0.0 to 800.0 °F 0 to 1600 °C 2 0 to 1769 °C 2 0 to 1350 °C 2 0 to 3200 °F 2 0 to 3216 °F 2 0 to 1600 °C 2 0 to 1769 °C 2 0 to 3200 °F 2 0 to 3216 °F 2 400 to 1800 °C 0 to 1820 °C 2 800 to 3200 °F 0 to 3308 °F 2 0 to 800 °C 0 to 1000 °C 0 to 1600 °F 0 to 1832 °F 0 to 1200 °C 0 to 1300 °C 0.0 to 800.
7. INPUT RANGE TABLES Continued from the previous page. Input type Input range Code 0 to 2000 °C 0 to 2320 °C 0 to 4000 °F 0 to 1300 °C 0 to 1390 °C PL II 0 to 1200 °C 0 to 2400 °F 0 to 2534 °F Thermocouple -199.9 to +600.0 °C * -199.9 to +100.0 °C * 0.0 to 400.0 °C U -199.9 to +999.9 °F * -100.0 to +200.0 °F 0.0 to 999.9 °F 0 to 400 °C L 0 to 800 °C 0 to 800 °F 0 to 1600 °F -199.9 to +649.0 °C -199.9 to +200.0 °C -100.0 to +50.0 °C -100.0 to +100.0 °C -100.0 to +200.0 °C 0.0 to 50.0 °C 0.0 to 100.
7. INPUT RANGE TABLES Continued from the previous page. Input type RTD Input range JPt100 -199.9 to +649.0 °C -199.9 to +200.0 °C -100.0 to +50.0 °C -100.0 to +100.0 °C -100.0 to +200.0 °C 0.0 to 50.0 °C 0.0 to 100.0 °C 0.0 to 200.0 °C 0.0 to 300.0 °C 0.0 to 500.0 °C Code Input Range P P P P P P P P P P 01 02 03 04 05 06 07 08 09 10 Input Range Table 2 Input type Voltage 78 0 to 5 V DC 0 to 10 V DC 1 to 5 V DC Input range 0.0 to 100.
8. 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. To prevent electric shock or instrument failure, do not touch the inside of the #" instrument.
8. TROUBLESHOOTING Continued from the previous page. Problem Probable cause No response Error in the data format Solution 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 Error in the data format NAK return Error occurs on the line (parity bit error, framing error, etc.) Confirm the identifier is correct or that with the correct function is specified.
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9. ASCII 7-BIT CODE TABLE This table is only for use with RKC communication.
The first edition: MAY 2001 The third edition: MAR.
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) IMR01H02-E3 MAR.
