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IO-Link Port 0 ... 3
LED (green,
red, yellow)
Meaning
Remedy
IO-Link mode
–
IOL (green)
green light
Device connected.
Communication OK.
–
green flashing
IO-Link Portactivated.
No connection to a Device.
Check connection between module and
Device.
Off
IO-Link Port deactivated.
–
Standard-IO mode
–
SIO (yellow)
yellow light
Digital input set
(process signal = 1)
–
Off
Digital input not set
(process signal = 0)
–
Channel error (red)
Error pending at Port
Possible causes:
–
Incorrect device connected
Check Device and setpoint configuration
(
è
parameters 20072, 20073, 20080).
–
Configured process data length
insufficient
Adjust process data length.
–
Data memory error
Check data memory.
–
Invalid cycle time
Adjust cycle time (
è
parameter 20049).
Lights red
–
Incorrect protocol revision
Device not compatible with set configur-
ation (
è
parameter 20072).
Diagnostics and fault clearance
18
Festo — CPX-AP-I-4IOL-M12 — 2020-03