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9 Operation
► Check whether the unit operates correctly.
9.1 Operation and diagnostics display
Description
LED 1
LED 2
LED 3
Supply voltage too low
OFF
OFF
OFF
Device fault
OFF
flashes at 1 Hz
OFF
Normal operation
X
ON
X
IO-Link master connected
X
ON
ON
No IO-Link master connected or
IO-Link master not detected
X
ON
flashes at 1 Hz
No IO-Link device connected or
IO-Link device not detected
IO-Link device provides no
switching output on pin 4
flashes at 1 Hz
ON
X
Short circuit on OUT1
flashes at 4 Hz
ON
X
Error with automatic output
configuration (→ 8.1)
flashes at 1 Hz
ON
X
Switching status OUT1
ON / OFF
ON
X
Parameter setting mode
ON
ON
OFF
X: not defined
