Skip to main content
All CollectionsTroubleshooting
PLC Not Counting Troubleshooting
PLC Not Counting Troubleshooting

PLC Input x not counting - the machine is on stop status permanently

Updated this week

The PLC is the controller responsible for counting machine cycles, stops, rejects, and other parameters. Occasionally, the PLC may stop counting. Follow the steps below to troubleshoot the issue.

Troubleshooting Workflow

1. Check PLC Screen

  • Navigate with the left and right arrows to the relevant PLC screen and confirm if counts are increasing on inputs.

  • If counts are registering on the PLC but not reflected in the Matics system, contact the Matics Support Team.


2. Inspect Input Connections

  • Verify that all connections to the relevant PLC inputs are secure—no loose or unstable connections.

  • Ensure connections are stable on both the sensor side and the PLC input side.


3. Inspect Cables

  • Ensure the cables are intact and not damaged or frayed.


4. Check Signal from Sensor to PLC Input

  • Confirm the sensor is sending a signal to the PLC input by using a multimeter.

  • If there is no signal:

    • Check if the sensor is powered and operational.

    • Inspect the sensor for any visible damage or malfunction.


5. Verify Relay Connections

  • Ensure the connection to the PLC is a 100% dry contact.

  • Check that relay connections are properly made and secure.

  • Inspect the relay for damage or faults.

Did this answer your question?