![]() ![]() ![]() My caution to you in my previous post was to watch the feedback zone to make sure the upload from the PLC to the PC is successful before sending the program back to the PLC to achieve the "Logic Equal" state. In that situation, to get to the "Logic Equal" state you need to send the program you just uploaded from the PLC back to the PLC using Proficy Machine Edition. But when the program in the PLC was created by some other programming software than Proficy Machine Edition, that is not the case. You would normally think that by extracting the program from the PLC into the PC running Proficy Machine Edition (what Proficy Machine Edition calls "uploading") would achieve the "Logic Equal" state. That means the version of the program in the PC running Proficy Machine Edition matches the version of the program in the PLC. When you connect to a PLC using Proficy machine Edition, in order to monitor the performance of the process controlled by the PLC, you need to be in a state called "Logic Equal". ![]()
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