Siemens SIMATIC ET 200AL, System Manual

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Interrupts/diagnostic messages/diagnostics
6.5 Fault types, causes, and corrective measures
Digital I/O module F-DI 4+F-DQ 2x24VDC/2A, 4xM12 (6ES7146-5FF00-0BA0)
74
Equipment Manual, V1.0, 05/2021, A5E51082342-AA
Event ID Diagnostic
message
F-DI 4/F-DQ 2
Fail-Safe
module
Description Possible causes Corrective measures
1
16x0106 Short-circuit to
ground
F-DI 4/F-DQ 2
digital outputs
The fail-safe module
detects a channel
problem where the
M-switch output ter-
minal is unexpectedly
at M potential
• Short-circuit of
output to M,
ground, or another
channel
• Defective output
driver
• "Maximum read-
back time" value is
configured too
small
• Eliminate the short-
circuit
• Increase readback
time
• Replace the fail-
safe module
16x011B Invalid/
inconsistent
firmware present
Module Inconsistency between
bus ASIC firmware and
fail-safe controller
firmware.
A firmware update
operation was per-
formed using an up-
date file not suitable
for the module (incor-
rect article number or
hardware revision)
• The firmware up-
date operation
should be repeated
with a suitable up-
date file
• Replace the fail-
safe module
16x013E Diagnostic event
queue overflow
Module Overflow of the diag-
nostic events queue
has occurred. A newly-
occurred diagnostic
event could not be
queued for transmis-
sion to the CPU be-
cause the buffer is full.
This can happen if
channel errors come
and go very quickly
(for example, discrep-
ancy errors)
Examine the Diagnos-
tics buffer to see what
errors are occurring,
then address that issue
16x0300 Discrepancy fail-
ure, channel state
0/0
F-DI 4/F-DQ 2
digital inputs
External discrepancy
failure: Channel state
0/0 with 1oo2 none-
quivalent configura-
tion
• Process signal
faulty, sensor may
be defective
• Configured dis-
crepancy time too
short
• Short-circuit
• Sensor mechanical
activation or
alignment out of
tolerance
• Check the process
signal, replace sen-
sor if necessary
• Check the config-
ured discrepancy
time
• Check the wiring
• Check that both
sensors are mount-
ed and aligned to
be activated to-
gether
16x0301 Discrepancy fail-
ure, channel state
0/1
F-DI 4/F-DQ 2
digital inputs
External discrepancy
failure: Channel state
0/1 with 1oo2 equiva-
lent configuration
16x0302 Discrepancy fail-
ure, channel state
1/0
F-DI 4/F-DQ 2
digital inputs
External discrepancy
failure: Channel state
1/0 with 1oo2 equiva-
lent configuration
16x0303 Discrepancy fail-
ure, channel state
1/1
F-DI 4/F-DQ 2
digital inputs
External discrepancy
failure: Channel state
1/1 with 1oo2 none-
quivalent configura-
tion