Modbus serial slave card for AC800M
Do we have any ABBModbus serial slave card for AC800M.
I believe CI853 is Modbus RTU master and cannot be used as Modbus slave. CI867 Modbus TCP can be used for both master and slave configuration.
Seasafe system requires a number of inputs from the ICSS, specifically field transmitters on the PCS and Marine system. Seasafe system will act as the modbus master.
As far as I can tell, this link will be read only – no inputs from the stability computer (msater) to the ICSS.
The Stability Computer (being Master) will not perform a cyclic request of data from the RCN (being Slave), so called "Monitoring mode" at SEASAFE-Onboard application. The data will be updated at the Stability Computer upon each single update request by the SEASAFE-Onboard application user.
Their preferred method is Modbus. Can you please let me know the preference for master/slave arrangement?
If you are using SV5.1 then follow this method to establish the communication: By using TCP to RTU gateways ex:moxa since gateways having the option to select the Modbus RTU as slave & master as well, so you can make your CI867 as TCP slave.
I have tested for CI867 as TCP master & modbus rtu as slave by using moxa gateway.
If you are using Sv6.0, then both AC800M & Ci853 COM ports can acts as both modbus RTU master(point-point or multidrop) & slave(point-point only)
please refer the snap below.