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- RKC INSTRUMENT
- SA201
- Instruction manual
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6
4. SETTING
To establish communication parameters between host computer (master) and SA201 (slave), it is necessary to set the device address (slave address), communication speed, data bit configuration and interval time on each SA201 (slave) in the communication mode.
Power ON
Input Type/Input Range Display (Display for approx. 4 seconds)
Display changes automatically
PV/SV Display Mode
Press and hold the
SET key and press the <R/S key at the same time
Communication Setting Mode
(Setting the communication parameters)
If the key is not pressed for more than one minute, the display will automatically return to the PV/SV display mode.
Power is turned on again
(Registration of set value)
4.1 Transfer to Communication Setting Mode
To go to the communication setting mode, you must be in PV/SV display. Press and hold the SET key and press the <R/S key at the same time to initiate communication settings. The first parameter to be displayed will be the device address (slave address), Add .
PV SV PV SV
SET
SA201
R/S
PV/SV display
AT
OUT1
OUT2
SV2
ALM1
ALM2
AT
OUT1
OUT2
SV2
ALM1
ALM2
SET
SA201
R/S
Device address (Slave address)
Communication setting mode
When let communication setting mode finish, press and hold the SET key and press the
<R/S key at the same time. The display changes to the PV/SV display.
IMR01K02-E1
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Table of contents
- 7 1. OUTLINE
- 8 2. SPECIFICATIONS
- 10 3. WIRING
- 12 4. SETTING
- 12 4.1 Transfer to Communication Setting Mode
- 13 4.2 Setting the Communication Parameters
- 17 4.3 Communication Requirements
- 19 5. RKC COMMUNICATION PROTOCOL
- 19 5.1 Polling
- 20 5.1.1 Polling procedures
- 23 5.1.2 Polling procedure example
- 24 5.2 Selecting
- 24 5.2.1 Selecting procedures
- 27 5.2.2 Selecting procedure example
- 28 5.3 Communication Identifier List
- 32 6. MODBUS COMMUNICATION PROTOCOL
- 32 6.1 Message Format
- 33 6.2 Function Code
- 33 6.3 Communication Mode
- 34 6.4 Slave Response
- 35 6.5 Calculating CRC
- 37 6.6 Message Format
- 37 6.6.1 Reading holding registers [03H]
- 38 6.6.2 Preset single resister [06H]
- 39 6.6.3 Diagnostics (loopback test) [08H]
- 40 6.7 Data Configuration
- 40 6.7.1 Data range
- 41 6.7.2 Data processing precautions
- 42 6.8 Communication Data List
- 46 7. INPUT RANGE TABLES
- 50 8. TROUBLESHOOTING
- 53 9. ASCII 7-BIT CODE TABLE (RFERENCE)