Interrupts/diagnostic messages
6.4 Diagnostic messages
ET 200SP F-TM Count 1x1Vpp sin/cos HF (6ES7136-6CB00-0CA0)
Equipment Manual, V1.0, 01/2021, A5E47073911-AA
79
Diagnostics alarm Fault
Meaning Solution
Failure in the input circuit
The F-module has detected an internal
error in the input circuits.
Possible cause:
• F-module is defective
• Replace defective F-module.
failure
The internal counters of the F-module
have resulted in divergent count values.
Possible causes:
• Impermissibly high electromagnetic
interference is present
• Encoder failure
• Excessive frequency
• F-module is defective
• Eliminate the interference. The
module must then be pulled and
plugged, or the power switched
OFF and ON.
• Replace encoder.
• Operate within specified frequency
range.
• Replace defective F-module.
The supply voltage is too high.
• Operate the F-module within the
specified voltage range (see Tech-
nical Specifications).
• After a critical over-voltage event,
once the voltage returns to the
specified range, the F-module must
be removed and reinserted or the
power switched OFF and ON.
The supply voltage is too low.
The encoder supply voltage is out of the
allowed range. This could be because of
an internal module problem or a problem
external to the module.
Disconnect the encoder and power
cycle the module.
• If the error goes away, there could
be a problem with the encoder that
causes the encoder supply to be out
of range.
• If the error is still present after a
power cycle with no encoder at-
tached, replace defective F-module.
The encoder's A and B signals are outside
the allowed phase shift tolerance, or the
amplitude (voltage) tolerance.
Possible causes:
• Encoder faulty
• Process wiring faulty
• Wire break
• Check process wiring.
• Check encoder.
• Replace defective F-module.
Frequency outside speci-
fication
The maximum frequency for the F-
module has been exceeded.
Reduce the frequency of the applica-
tion (see Technical Specifications).
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