10 - 2 Key Input Related Problems
■ Normal display mode problems
● Mode cannot be changed using keys
● Program number does not start flashing when PROG key is pressed
● RUN mode cannot be invoked with the RUN/HOLD key
● HOLD mode cannot be invoked with the RUN/HOLD key
● RESET is not possible with the PROG, RUN and HOLD keys.
RESET is available in the READY program run mode and returns operations to
the first segment.
Cause Measure
Set to READY mode. Perform a RUN operation (press the RUN/HOLD key) to go to
the RUN mode. (A reset operation can also be performed in
the READY mode using external switch inputs or transmission.
Set to key lock. Set variable parameter
PA01
between 0 to 2.
Cause Measure
Set to READY or FAST mode. The HOLD mode is available from READY and FAST modes by
pressing the RUN key. Press the RUN/HOLD key once again.
Set to END mode. Perform a reset operation (press the PROG, RUN and HOLD
keys). Invoke the READY mode and perform a RUN operation
(press the RUN/HOLD key) to go to the RUN mode.
Set to constant value control mode. Set constant value control data
ConSt
to 0.
Set to key lock. Set variable parameter
PA01
between 0 to 2.
Cause Measure
Select the set program.
Set to END mode. Set READY mode to execute RESET operation (PROG +
RUN/HOLD keys).
Set to key lock. Set variable parameter
PA01
between 0 to 2.
Program selected in READY mode is unset.
Cause Measure
Program selection of external switch input is not 0.
Turn off all external switch inputs SW9 to 16.
Not set to READY mode.
Set READY mode to execute RESET operation (PROG + RUN/HOLD keys).
Set to key lock. Set variable parameter
PA01
between 0 to 2.
Set to fixed command control mode. Set fixed command control data
ConSt
setting to 0.
Cause Measure
Normal display mode not on Press DISP key to invoke normal display mode.
10-3
Chapter 10. MAINTENANCE AND TROUBLESHOOTING
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