slc 505 to bacnet

[tommu 0]

We have numerous slc's and plc5's in our plan most of the are 505's on our plant network. We need to monitor them with a TAC (old iventisys) building management system any suggestions. The only thing I know about the BMS is it can talk Bacnet, Modbusrty, and Lonworks and I don't know any thing about them tom

[Mike Dyble 0]

Modbus is a simple protocol, which is well documented, so I would start there. I dont know anything about the other protocols. BTW Do you mean Modbus RTU... Mike

[tommu 0]

yes it is RTU thanks

[BobLfoot 302]

You Might want to consider using a ControlLogix CPU in a 4 or 7 slot rack as a data concentrator. Let the BAC communicate modbus with the controllogix and bring over you desired data in one large packed block. The Controllogix can communicate ethernet to the SLC505's, DH+ to your PLC5's and SLC 5/04's and DH485 to your SLC 5/03's.

[tommu 0]

I was thinking along that line too but I'm still new to control logix but it would be a good project to wet my feet with. I was looking at the opc server too but would need 2 one talking to plc's and one to bacnet and didn't come up with the way to link the opc's to gether (I'm new to this too). tom

[Mike Dyble 0]

Kepware do an OPC client server data concentrater product which works well, if you wanted to take that route. However there is nothing to stop you having 2 OPC servers running on the same PC providing they each have there own serial port if you are using serial comms