Process and system messages, error handling
11.3 I/O modules
SIPLUS HCS4200
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Operating Instructions, 11/2015, A5E35066204A/RS-AA/002
11.3
I/O modules
LED status display
The I/O module has 2 LEDs on the front. The LEDs provide information about the operating
status of the device/system.
Meaning of LEDs
RUN
green
ERROR
red
Description
Power OFF, device switched off
Initialization: The LED flashes until the HCS is detected and accepted as a
bus node by the higher-level control system.
Device has started up and is ready.
An error has occurred: Error in general monitoring; error in HCS communi-
cation
For PM U/I: Line supply voltage monitoring
PM4000 DI/DO has one LED per input/output for indicating the switching status.
Channel
LED
Description
LED off: "L" state
LED on: "H" state
Causes of errors and possible remedies
Error code
Description
Possible causes / corrective
action
0001
Short-circuit
Switch off machine, check ca-
bling and rectify fault; restart
0006
Wire break
0011
No supply voltage
5112
Polarity reversal at measuring
input