Diagnostics and troubleshooting
Cerabar PMP23 IO-Link
36
Hauser
10
Diagnostics and troubleshooting
10.1 Troubleshooting
If an illegal configuration exists in the device, the device switches to the failsafe mode.
Example:
• The diagnostic message "C485" is displayed via IO-Link.
• The device is in the simulation mode.
• If the device configuration is corrected, e.g. by resetting the device, the device quits the
fault state and switches to the measuring mode.
General errors
Problem
Possible cause
Solution
Device does not respond
Supply voltage does not match the value
indicated on the nameplate.
Apply correct voltage.
The polarity of the supply voltage is wrong.
Correct the polarity.
Connecting cables are not in contact with the
terminals.
Check for electrical contact
between cables and correct.
No communication
• Communication cable not connected.
• Communication cable incorrectly attached to
device.
• Communication cable incorrectly attached to
the IO-Link master.
Check wiring and cables.
Output current
≤ 3.6 mA
Signal line is not wired correctly.
Check wiring.
No transmission of process
data
There is an error in the device.
Correct errors that are
displayed as a diagnostic
event→ 38.