How to read PLC input status on BMS through Modbus Communication ?

[hinddhindsa]

hi friends.
i have PLC with 13 inputs , i want to give the status of these inputs to BMS server guy , he want to read the status through modbus RS485 communication protocol.
how can i make the program to give this status to him . Plz advice. Im going to use FUJI Electric WSZ series PLC .

 

[BobB]

You will require a serial card with RS485 and have to set it up as Modbus RTU slave - then give him the addresses.

 

[hinddhindsa]

YES, i have the additional card which had RS482 communication port. so what about the addresses , how can i give him adresses for my inputs status ?

 

[BobB]

Geez - you have to set up Modbus RTU on the4 card and them the addresses - check the manuals - this is really basic comms stuff in a PLC. I do not know the PLC either - read the manuals - contact the supplier - basic stuff.

 

[hinddhindsa]

ok sir thanks