iSMA-B-W0202 Modbus User Manual
version 1.2
Page 28 / 49
Operation Mode registers (40176,40180)
This register contains information about module working mode. Available modes and register
values are shown in the table below:
Value
OPERATION MODE Register
0
Ordinary IO(def)
1
Monostabile Relay
2
Bistabile Relay
3
Time Relay NO [ms]
4
Time Relay NC [ms]
5
Time Relay NO [s]
6
Time Relay NC [s]
7
Input Forwarding
8
Heating
9
Cooling
Table 28 Special application modes
Operating mode can be changed by writing right value in the Operation Mode register.
Special modes are initialized after 3 seconds from power-up or restart of the modul (the time
value needed to stabilize the analog transmitter working).
Each Input mode change sets assigned Output to default state and reset the timer (used in Time-
based modes). When the new selected operating mode is running output is controlled according
to the new mode functioning.
8.1.1
Ordinary IO
In this mode, the module works as a standard IO, inputs and outputs are not related which each
other.
8.1.2
Monostable Relay
In this mode both rising and falling edge on Special Input change output state. The action of
monostable relay can be executed remotely by changing the state of bit from false to true in
COMMAND register (40020). Outputs can be also overwritten by DIGITAL OUTPUT register
(40018), which allows remote control from BMS.
8.1.3
Bistable Relay
In this mode only rising edge on Special Input change output state. The action of bistable relay
can be executed remotely by changing the state of bit from false to true in COMMAND register
(40020). Outputs can be also overwritten by DIGITAL OUTPUT register (40018 ), which allows
remote control from BMS.
8.1.4
Time Relay NO [ms]
In this mode when the output value is false, rising edge on Special Input set output to true value.
Every falling edge on Special Input starts the counter from the beginning what means that the
output will stay in true value for a time defined in TIME VALUE register (expressed in