Having an issue in which trying to communicate via modbus on an ACM+. I made the redundant serial cable myself, and verified it with my scopemeter. I am talking through a rs232/rs485 converter by Phoenix Contact, that uses a standard 9-pin d-sub connector for the RS232 connection, rather than breaking out the cable the way the Schneider converter had done. The ACM+ is issuing a "no connection" error. Does that mean its failing to connect to the modbus device, or to the converer itself? I had to jumber pins 4, and 8, which connects CTS and DTR, and in the Phoenix Contact Converter (PSM-ME-RS232/RS485-P), DTR and DSR are internally jumpered.
Dealing with a handmade cable, and unfamiliar converter, and the fact I've never had to bring a modbus connection into an ACM has been daunting. Anything I'm missing? THE converter and a DCE.DTE switch, a Termination switch, and a set of dip switches for baud, inversing the CTS/RTS and 485/422 selection. I'm pretty sure I have the dip switches set correctly, but am a little unclear on possible cabling issues with the different connections shown from the Schneider unit.
Dealing with a handmade cable, and unfamiliar converter, and the fact I've never had to bring a modbus connection into an ACM has been daunting. Anything I'm missing? THE converter and a DCE.DTE switch, a Termination switch, and a set of dip switches for baud, inversing the CTS/RTS and 485/422 selection. I'm pretty sure I have the dip switches set correctly, but am a little unclear on possible cabling issues with the different connections shown from the Schneider unit.