Stulz C2020 - ModBus Data Mapping and Registers

EN/07.2013/58/72
Read coil status (0x01)
With this function it’s possible to read the state of the machine.
The state is shown by a bit: 0=OFF; 1=ON.
The ModBus address corresponds to number of the bit.
ModBus function 0x01: read coil status ModBus address
MACHINE OFF 1
MACHINE ON 2
MANUAL TESTING 3
EMERGENCY 4
STANDBY 5
AUTOMATIC TESTING 6
Read input status (0x02)
With this function it’s possible to read the alarms, input/output digital state.
The state is shown by a bit: 0=OFF; 1=ON.
The ModBus address corresponds to number of the bit.
ModBus function 0x01: read coil status ModBus address
Digital input status
DIG IN - A1 1
DIG IN - A2 2
DIG IN - A3 3
DIG IN - A4 4
DIG IN - A5 5
DIG IN - A6 6
DIG IN - A7 7
DIG IN - A8 8
DIG IN - A9 9
DIG IN - A10 10
DIG IN - A11 11
DIG IN - A12 12
DIG IN - A13 13
Alarms - First part
MAX TEMPERATURE 14
HIGH TEMPERATURE 15
LOW TEMPERATURE 16
ANTIFREEZE 17
LOW HUMIDITY 18
HIGH HUMIDITY 19
LOW PRESSURE 20
HIGH PRESSURE 21
AIR FLOW 22
FIRE - SMOKE 23
INTRUSION - VIBRATION 24
POWER FAILURE 25
VOLTAGE OUT OF RANGE 26
DIRTY FILTER 27
COMPRESSOR THERMIC 28