Diagnostics; General; Error Messages - Festo CPX-4AE-4AA-H Operating Instructions Manual

Diagnostics

8 Diagnostics
8.1

General

Specific errors of the analogue module are reported or suppressed dependent on the module parame-
terisation è Further information.
The monitoring of the errors can be activated or deactivated independently of each other. Active
monitoring has the following effect:
è The error is sent to the CPX bus node.
è The module error LED and channel error LED light up.
The representation of errors in the bus nodes depends on the bus protocol è Description of bus
nodes.
A further possibility for diagnostics is the operator unit CPX-MMI. The operator unit displays the error
messages in clear text è Description of operator unit CPX-MMI.
8.2

Error messages

Error Error description
number
2 Short circuit/overload at input or
output
– The behaviour in case of short cir-
cuit/overload and the error elimination
measures depend on the parameterisa-
tion of the "Behaviour after short cir-
cuit/overload" module parameter.
– Parameter description è Tab. 17
Description of the "Behaviour after
short circuit/overload" module param-
eter.
Wire break (idling) of current input or
3
current output
– Only for signal range 4 ... 20 mA
– Input: I
– Output: no signal present.
– Parameter description è Tab. 19
Description of "Monitoring of channel
0 ... 3".
Festo — CPX-4AE-4AA-H — 2021-06b
1)
1)
< 1.2 mA
IN
Error elimination
1. Check the cables and connected
devices. Replace defective cables and
devices.
2. Restart voltage.
– Check the cables and connected
devices. Replace defective cables and
devices.
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