Siemens SIMATIC ET 200AL System Manual page 976

Interrupts/diagnostic messages/diagnostics
6.5 Fault types, causes, and corrective measures
6.5 Fault types, causes, and corrective measures
The "Fault types, causes, and corrective measures" table below lists the messages of the
F-DI 4/F-DQ 2 Fail-Safe module. These messages are displayed in the TIA Portal under "Online
& diagnostics" > "Diagnostics" > "Diagnostic buffer". When you highlight an individual text line
in the diagnostic buffer, the Event ID for that text item is displayed, along with module
identity and location that generated the message. You may need to expand the window to
see all information.
Table 6- 7 Fault types, causes, and corrective measures
Event ID Diagnostic
message
16x0001 Short-circuit
16x0005 Overtemperature
16x0006 Wire break
70
F-DI 4/F-DQ 2 Description
Fail-Safe
module
F-DI 4/F-DQ 2 A channel problem has
digital outputs been detected where
either the P terminal or
M terminal is at an
unexpected potential
Module
• Overtemperature
at microcontoller
• Overtemperature
at I/O
Module Wire break failure.
The module can detect
a wire break when all
of the following are
true:
• The channel is
wired using a PM
load
• The PV=0
• The wire break
diagnostic is ena-
bled
Digital I/O module F-DI 4+F-DQ 2x24VDC/2A, 4xM12 (6ES7146-5FF00-0BA0)
Possible causes Corrective measures
• Short-circuit of the •
output
• Short-circuit be- •
tween channels
with different sig-
•
nals
• Output overload
• "Maximum read-
back time switch •
on test" value is
configured too
small
• Short-circuit of
output to M
• Defective output
driver
Shutdown due to vio- Check the ambient
lation of high tempera- temperature. Once the
ture limit value in the fault has been elimi-
module case nated, switch the
power off and on
Output is activated:
•
• No load is connect-
ed to the PM out-
•
put
• Output is wired in
•
output application
mode 2
• Too small of a load
is detected
Equipment Manual, V1.0, 05/2021, A5E51082342-AA
1
Eliminate the short-
circuit
Eliminate the over-
load
Increase "Maximum
readback time
switch on test" if
permissible
Replace the fail-
safe module
Change the output
load characteristics
Deactivate unused
channels
Disable wire break
diagnostic for the
offending channels