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Programming Console Operations Section 7-3
The cursor in the lower left corner of the display indicates that the force set/
reset is in progress. Bit status will remain ON or OFF only as long as the
key is held down; the original status will return one cycle after the key is
released.
3. Press the SHIFT+SET or SHIFT+RESET Keys to maintain the status of the
bit after the key is released. In this case, the force-set status is indicated
by an “S” and the force-reset status is indicated by an “R.”
To return the bit to its original status, press the NOT Key or perform the
Clear Force Set/Reset operation. Refer to 7-3-25 Clear Force Set/Reset for
details.
Forced status will also be cleared in the following cases:
a) When the PC’s operating mode is changed (although the forced status
will not be cleared when the mode is changed between PROGRAM
and MONITOR if SR 25211 is ON)
b) When the PC stops because a fatal error occurred
c) When the PC stops because of a power interruption
7-3-25 Clear Force Set/Reset
This operation is used to restore the status of all bits which have been force
set or reset. It is possible in MONITOR or PROGRAM mode only.
!Caution Before changing the contents of I/O memory, be sure that the changes will not
cause equipment to operate unexpectedly or dangerously. In particular, take
care when changing the status of output bits. The PC continues to refresh I/O
bits even if the PC is in PROGRAM mode, so devices connected to output
points on the Output Units may operate unexpectedly.
1,2,3... 1. Press the CLR Key to bring up the initial display.
2. Press the SET and then the RESET Key. A confirmation message will ap-
pear.
Note If you mistakenly press the wrong key, press CLR and start again
from the beginning.
3. Press the NOT Key to clear the force-set/reset status of bits in all data ar-
eas.
RUN MONITOR PROGRAM
No OK OK
SET
RESET
FORCE RELE?
NOT
FORCE RELE
END
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