FP2 Analog Unit
Troubleshooting
13 - 4
13.2 Problems Concerning the Analog Output
13.2 Problems Concerning the Analog Output
Problem
Remedy
Proper analog output cannot be
obtained.
Make sure that the FP2 CPU unit is in RUN mode.
Check the I/O allocation for the analog units.
Check the range settings.
Check the settings for no execution of conversion processing (shared
memory setting).
Make sure that the analog output data given to the analog unit is proper
for the range.
For current output, make sure that the impedance of the output load
device is 300
Ω
or less.
Check the analog signal wiring.
Analog output value is unsteady.
Make sure that you are using shielded twisted-pair wiring for the output
signal wires.
Make sure that the shielding of the shielded twisted-pair wiring is proper-
ly connected.
Make sure that no output signal wires are near other power wires.
Check the sequence program that gives the output data to the analog
unit.
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