Siemens SENTRON 3WA, System Manual

Page: 35 / 82

Parameterization and remote control
4.2 Close/open circuit breaker via Modbus TCP
3WA Air Circuit Breaker Communication
System Manual, 11/2021, 92310000004-02
33
4.2 Close/open circuit breaker via Modbus TCP
Closing or opening of the circuit breaker via the communication connection takes place by
means of commands. For information about the commands, see Chapter Writing commands
(Page 37).
Note
Closing or opening of the circuit breaker via the communication connection requires
communication-capable closing and opening coils (shunt trips). The closing coil (CC-COM)
and the shunt trip (ST-COM) can be ordered immediately with the ready4COM circuit breaker
or can be retrofit later.
Remote switching protection (RSP) must be deactivated on the COM190 communication
module in order to permit switching via the communication connection. For more
information, refer to the 3WA Equipment Manual.
The value 0x815 is transferred in order to write the Close/Open command.
Name Register (0x0000 HEX)
Close circuit breaker 0xCD15
Open circuit breaker 0xCD16
Whether or not the switching operation was successful can be queried in register 0xCB3B, see
also section Status of the mechanical system (Page 20).
Name Register (0x0000 HEX)
Status of mechanical system of circuit breaker 0xCB3B