MTB_Hardtail
Member
Been in the digital world half my life, but only recently in PLCs. I inherited a Tamper project from 5 years back which never worked. Tamper is s'posed to put a label on any Manual Sort box, and ignore those which have a good routing destination. All boxes get a good Product Detect Photo Eye signal. Logic is s'posed to clear the PD bit, following the start of the Manual Sort Tamp Cycle, if next the box has a good destination. Problem is, we get from one to three additional tamps on good boxes following the Manual Sort box. The associated AOIs are way overbuilt for this logic, and were dropped in place and band-aided together by the original vendor. Makes them hard to troubleshoot and/or modify. Half the rungs don't even execute.
Rung 5 - Valid Package at Photo Eye has back to back OSR/OSF functions. However, it never fires. Also, the PE Clear above never fires. I understand the need for debounce, but this looks like it would give me a one machine cycle positive pulse. Is that OK? Any ideas... TIA
Rung 5 - Valid Package at Photo Eye has back to back OSR/OSF functions. However, it never fires. Also, the PE Clear above never fires. I understand the need for debounce, but this looks like it would give me a one machine cycle positive pulse. Is that OK? Any ideas... TIA