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I'm trying to read six input registers from a remote device but the software I put together doesn't seem to do much; no errors but no read-backs either. I'm a beginner, so the answer is probably simple. The remote device input registers start at 200 hex. The device uses TCP and the IP address is correct. My computer communicates well with the remote device through QmodMaster. Any help you could give would be appreciated. Thanks, Mike. Modbus Read 01.pdf So far 01.vi