If the PLC is not connected to the Matics network, the machine on the web/app will display a status of “no communication.”
How it works:
If the PLC loses connection to the Matics router for more than 5 minutes, the machine status will change to “no communication."
Check for IP address conflicts on the network. For example, duplicate IP addresses assigned to printers or other devices can prevent the PLC from communicating properly.
Troubleshooting Basics: This guide provides systematic steps to verify hardware, assess network connectivity, and resolve configuration issues for seamless PLC communication.
Troubleshooting Workflow
1. Restart the PLC - Disconnect the PLC from the power for 30-40 seconds and connect it again.
2. Check PLC Power Supply
Ensure the PLC is connected to power and that the display screen is on.
Confirm that the status indicator LEDs on the PLC Ethernet port (green/orange) are active, signaling proper power and connectivity.
Verify the voltage is stable and there are no loose connections.
Check for any damaged or exposed wires leading to the power supply, and ensure that all connections are securely fastened.
3. Check Wi-Fi Availability
Use your phone near the PLC to check if the network EM-PLC is available.
Verify LED lights are on in the ETH connection - both green\orange are on
Ensure the signal is strong, not weak or poor.
If the Matics Wi-Fi is unavailable for the PLC:
Inspect nearby Matics access points.
Test the network signal strength with another device to confirm stable and reliable connectivity in the PLC's location.
Ensure strong Wi-Fi coverage is provided to the PLC.
Scan the network for duplicate IP addresses that may conflict with the PLC. Resolve any conflicts by reassigning unique IPs to devices like printers or other peripherals.
4. Check PLC Network Settings
Use your phone next to the PLC and search for a network similar to “HF-A21x_Ap” or "HF-A11x_AP"
If you find this network, it indicates the PLC may have lost its network configuration.
In this case, contact Matics Support for assistance with reconfiguring the PLC network settings.
If reconnection is needed, attempt resetting the PLC's network settings manually before contacting support. Refer to the user manual or online resources for guidance if possible.
