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FCS - Operation Manual
Rev. C | 2022.02
Modbus Function1 (Read Coils). Reply from the device is 1 bit per coil, packed in
bytes.
Coil
Register
Description
Range
1
0
Relay 1
0 or 1
2
1
Relay 2
0 or 1
3
2
Relay 3
0 or 1
4
3
Relay 4
0 or 1
5
4
Strobe (connected to
remote strobe/horn
terminal
0 or 1
6
5
Audible (internal)
0 or 1
7
6
Horn (connected to
remote strobe/horn
terminal
0 or 1
8
7
Remote_Relay 1
0 or 1
up to 57 remote relays equaling
64 relays in total
9
8
Remote_Relay 2
10
9
Remote_Relay 3
11
10
Remote_Relay 4
12
11
Remote_Relay 5
13
12
Remote_Relay 6
...
...
...
64
63
Remote_Relay 57