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Programming Console Operations Section 7-3
4. Press the WRITE Key to write the changes in memory and return to the
binary monitor.
7-3-21 Signed Decimal Data Modification
This operation is used to change the decimal value of a data area word being
monitored as signed decimal data, within a range of –32,768 to 32,767
(–2,147,483,648 to 2,147,483,647 for double-length data). The contents of
the specified word are converted automatically to signed hexadecimal (two’s
complement format).
Words SR 253 to SR 255 cannot be changed.
!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. Monitor (signed decimal) the status of the word for which the present value
is to be changed.
(Signed decimal monitor)
2. Press the CHG Key to begin decimal data modification.
3. Input the new PV and press the WRITE Key to change the PV. The opera-
tion 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 (–2,147,483,648
to 2,147,483,647 for double-length data). Use the SET Key to input a pos-
itive number, and use the RESET Key to input a negative number.
If an error is made, press the CLR Key to restore the status prior to the in-
put. Then enter the correct input.
Note The buzzer will sound if the input value is not within range.
WRITE
D0001 MONTR
1010010101010101
RUN MONITOR PROGRAM
No OK OK
,
–
$
CHG
PRES VAL?
D0200
–
00016
REC
RESET
D
3
C
2 7 6 8
WRITE
,
–
! %$&
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