10.3.2.2 Diagnostics of the DO 16 x DC 24 V/0.5 A
Introduction
Module faults and channel faults are displayed via the group error display (SF LED) and
signaled via the diagnostic data records 0/1.
Diagnostic messages and possible corrective measures
Table 10-7 Diagnostic messages of the DO 16 x DC 4 V/0.5 A and possible corrective measures
Diagnostic mes‐
sage
Configurable Possible cause of error Corrective measure
No sensor or load
voltage
Yes
(per channel
group)
Corresponding supply voltage L+
missing
Feed supply L+
Wire break Yes
(group diag‐
nostics)
Interruption of the actuator con‐
nection
Check wiring/actuator
Short-circuit to M Yes
(group diag‐
nostics)
Output short-circuited to ground Check the wiring
Short-circuit to L+ Yes
(group diag‐
nostics)
Output short-circuited to L+ Check wiring/actuator
Load resistance between 10 kΩ
and 1 MΩ
No external auxili‐
ary voltage
Yes At least one supply voltage L+ of
the module is missing
Feed supply L+
Fuse blown No At least one module-internal fuse
is defective
Replace the module
Module parame‐
ters not assigned
No Startup error Reassign the module pa‐
rameters
Incorrect parame‐
ters
No One parameter, or the combina‐
tion of parameters, is not plausible
Reassign the module pa‐
rameters
Parameter assign‐
ment error
No One parameter, or the combina‐
tion of parameters, is not plausible
Reassign the module pa‐
rameters
Time monitoring
tripped
No Intermittently high electromagnet‐
ic interference
Eliminate the interference
and switch the ET 200PA
SMART station off and on.
EPROM error No Module defective Replace the module
RAM error No Module defective Replace the module
Group diagnostics
The diagnostics parameter "Group diagnostics" enables the signaling of channel-specific
errors to be switched off, with the exception of "External load voltage L+" and "Parameter
assignment error".
ET 200PA SMART I/O modules
10.3 Digital output modules
ET 200PA SMART
Operating Instructions, 06/2019, A5E34192013-AB 147
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