Weidmuller UR20 Series, Manual

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9 Diagnostics and troubleshooting | LED indicators and troubleshooting
56 2547720000/03/09.2019 Manual Communication module UR20-4COM-IO-LINK
9.3 LED indicators and troubleshooting
LED Status Recommended action
Status LED Red: – Error in the supply voltage at input current path
– Communication error on the system bus
– Configuration error IO-Link
– There is a new diagnostic message
– Check the supply voltage
– Check that the module has been snapped into place
properly
– Check the configuration
Channel LED 1.1 ... 4.1 Yellow: – Status COM 1 ... COM 4
–
1.2 ...4.2 Red: – Fehler IO-Link port 1 ... IO-Link port 4 – Check the wiring
– Check the configuration
1.4 ... 4.4 Yellow: – Status DI 1 ... DI 4
–