Modbus A57
Register Modbus
number
Parameter Function Datatype DataRange
System IO
200 40200 Oil temperature (Celsius) signed 16-bit binary number
201 40201 4–20 mA input 1 scaled by 100 signed 16-bit binary number
202 40202 4–20 mA input 2 scaled by 100 signed 16-bit binary number
203 40203 4–20 mA input 3 scaled by 100 signed 16-bit binary number
204 40204 4–20 mA input 4 scaled by 100 signed 16-bit binary number
205 40205 relay0 (maintenance, NO) signed 16-bit binary number
206 40206 relay1 (system, NO) signed 16-bit binary number
207 40207 relay2 (warning, NC) signed 16-bit binary number
208 40208 relay3 (alarm, NC) signed 16-bit binary number
Misc
300 40300
Registers update timestamp in
second since 1/1/1970 (UTC)
unsigned 32-bit LSB portion
301 40301 unsigned 32-bit MSB portion
<Gas status> <Status>
Bit Description Value Description
15 Reserved 4 Sytem Error
14 Reserved 3 Gas Alarm level
13 Reserved 2 Gas warning level
12 Reserved 1 System Healthy
11 Reserved 0 Initializing
10 Reserved
9 Reserved
8 Gas Month ROC CRITICAL
7 Gas Month ROC WARNING
6 Gas Week ROC CRITICAL
5 Gas Week ROC WARNING
4 Gas Day ROC CRITICAL
3 Gas Day ROC WARNING
2 Gas level CRITICAL
1 Gas level WARNING
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