Dale traced the logic back. Upstream. Upstream further. Through a seal-in branch. Through a motor overload relay tag. Through a safety interlock from the cage door that should have been welded shut ten years ago.
He grabbed his radio. “Brenda, it’s not the conveyor. It’s the washdown input. Pull the fuse on panel J7. I’ll reset the fault.” rs logix
Dale closed the laptop. He didn’t save the rung comments or write a report. He just whispered to the glowing screen, “Good girl.” Dale traced the logic back
“Alright, old man,” he muttered to the screen, “show me where you’re lying.” Through a seal-in branch
He smiled grimly. RSLogix hadn’t fixed the machine. But it had told him the truth.
He double-clicked the controller—a CompactLogix L32E. The ladder logic unfolded like a blueprint of the plant’s nervous system. Rungs of XICs and OTEs. Timers counting milliseconds no human would ever feel. And there, on rung 47—the "Bottle_Twist_Diverger"—a single bit of truth.
XIC Washdown_Active I:2/6