I’ve been trying to get West/Partlow brand Modbus serial temperature controllers to communicate reliably with KepWare through TCP/IP converters for a full three months. I’ve tried extremely slow polling rates (5000ms), separating transaction groups, rewiring, 2 different B&B converters (Ethernet to Serial and Modbus TCP/IP to Modbus RTU) , and I’ve even tried their Modbus TCP/IP modules which worked great until they missed a read- and required a power cycle to re-establish communications. I have a few questions and would be genuinely grateful for any feedback…
1- Are there any Modbus TCP/IP to RTU (or general Ethernet to Serial w/ Ethernet Encapsulation) converters that anyone can recommend to handle a large amount of information?
2- Are there any multi-loop Temperature Controllers (Modbus TCP/IP) that have a good reputation for working with OPC Servers?
3- Any other ideas?