schembm
Member
Hi,
I am using an Allen Bradley micrologix 1200 plc with two serial channels. I need to connect to a General Electric Motor Drive (VAT-23D) which connects serially using RS-485 but accepts instructions in packets of 48 bytes of ASCII code.
I have tried to set the plc channel to ascii but the drive did not recognise the protocol I think because I recieved nothing and when I set the plc channel to DH485, an error developed in the ASCII Write (AWT) command stating that the local modem is not ready.
Any help is much appriciated!
Thanks!
I am using an Allen Bradley micrologix 1200 plc with two serial channels. I need to connect to a General Electric Motor Drive (VAT-23D) which connects serially using RS-485 but accepts instructions in packets of 48 bytes of ASCII code.
I have tried to set the plc channel to ascii but the drive did not recognise the protocol I think because I recieved nothing and when I set the plc channel to DH485, an error developed in the ASCII Write (AWT) command stating that the local modem is not ready.
Any help is much appriciated!
Thanks!