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b) Use the 1 and 0 Keys to change a bit’s status to on or off. The cursor will
move one bit to the right after one of these keys is pressed.
B
1
D0000 CHG?
1010010101010101
c) Use the SHIFT and SET and SHIFT and RESET Keys to force-set or
force-reset a bit’s status. The cursor will move one bit to the right after
one of these keys is pressed. The NOT Key will clear force-set or force-
reset status.
Note Bits in the DM Area cannot be force-set or force-reset.
4. Press the WRITE Key to write the changes in memory and return to the
binary monitor.
WRITE
D0000 MONTR
1010010101010101
4-3-21 Signed Decimal Data Modification
This operation is used to change the decimal value of a word being moni-
tored as signed decimal data, within a range of –32,768 to 32,767. The con-
tents of the specified word are converted automatically to signed hexadeci-
mal (two’s complement format).
Words SR 253 to SR 255 cannot be changed.
RUN MONITOR PROGRAM
No OK OK
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 CPU Unit or Expansion I/O Units may operate unexpectedly.
1, 2, 3... 1. Monitor (signed decimal) the status of the word for which the present value
is to be changed.
(Signed decimal monitor)
D0200
Ć00016
2. Press the CHG Key to begin decimal data modification.
CHG
PRES VAL?
D0200Ć00016
3. Input the new PV and press the WRITE Key to change the PV. The operation
will end and the signed-decimal monitoring display will return when the
WRITE Key is pressed.
The PV can be set within a range of –32,768 and 32,767. Use the SET Key to
input a positive number, and use the RESET Key to input a negative number.
RESET
D
3
C
2 7 6 8
WRITE
D0200
Ć32768
If an erroneous input has been made, press the CLR Key to restore the sta-
tus prior to the input. Then enter the correct input.
The buzzer will sound if a value outside the specified range is input, allowing
no writing.
Programming Console Operations
Section 4-3