iSMA-B-W0202 Modbus User Manual
version 1.2
Page 32 / 49
Command register (40020)
The module have special register COMMAND (40020). The command register is used to
remotely execute action ( simulate light switch/PIR). The action is executed by changing state of
relevant bit (changing from false to true). All special application modes can be executed except
Input Forwarding, Heating and Cooling modes.
No of bit in register (40020)
Command input
number
0
1
1
2
2
3
3
4
Table 29 Command register
Block Inputs register (40021)
The Block Inputs register is used to block physical input signals to take action in logic. By setting
true value on relevant bit the module Block Input and no action will be executed. Setting false
value restores normal operation. The Block Input function does not work when the
heating/cooling input mode is set.
No of bit in register (40021)
Block input number
0
1
1
2
2
3
3
4
Table 30 Block Inputs register
Setpoint registers (40178,40182)
The SETPOINT registers contain values which are used in heating/cooling modes as the setpoints
for heating/cooling control algorithm
The default Setpoint value is 21. (read more in
Heating mode
,
Cooling mode
).
The register stores the setpoint multiplied by 10.
Differential registers (40179,40183)
The DIFFERENTIAL registers contain values which are used in heating/cooling modes as the
differential for heating/cooling control algorithm. Setpoint registers and Differential registers
create deadband of the Control values which has no influence on output.
Deadband = (Setpoint – Differential, Se Differential)
The default Differential value is 1. (read more in
Heating mode
,
Cooling mode
).
The register stores the differential multiplied by 10.