Jacob Brown
Member
I have a SL9696-VRE temperature controller that I need to communicate to via Modbus ASCII (RS-485). I have a PLC with a Point IO 1734-AENT and a 1734-485ASC attached to the Point IO module. There are transmit and receive wires going from the ASCII Module to the Temperature controller. I know that communication to the ASCII module is good, but trying to send an ASCII string to the temperature controller yields no change on the temperature controller. At this point, it might be my ASCII string. It begins with a ':' character, the address, function, data, empty bit for error, then my ending CR-LF characters. Any advice? Thanks!