I'm new to PLC programming and work has been letting me dip my toes into assisting our maintenance crew with fixing aging equipment.
I've got a servo driven auger that gets a signal from an old Mitsubishi FX1S-14MT PLC. The HMI started reporting recently that the PLC was disconnected so we got a used one with an identical model number to replace it.
Everything works but the signal chain to servo via the HMI. It even lets us trigger it manually in the ladder logic through an old GX Developer install I managed to get running on a VM in Windows 10.
I feel like I'm missing something dumb like a misconfigured baud rate or default setting I should have checked when reading the program from the old PLC before removing it.
Any direction would be greatly appreciated🙏. This is the first time in a long time I have actually felt excited to go to work. This type of problem solving is really scratching an itch in my brain. 😜🤩🤯