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Programming Console Operations Section 7-3
The operation will end and the normal monitoring display will return when
the WRITE Key is pressed.
7-3-20 Binary Data Modification
This operation is used to change the contents of memory area words (includ-
ing timer/counter present values) when the word is monitored using the proce-
dure described in 7-3-13 Binary Monitor. It is possible in MONITOR or
PROGRAM mode only.
Bits SR 25300 to SR 25507 and timer/counter flags 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 the status of the desired word according to the procedure de-
scribed 7-3-13 Binary Monitor. Bit 00 is on the right and bit 15 is on the left.
(BInary monitor)
2. Press the CHG Key to begin binary data modification.
A flashing cursor will appear over bit 15. The cursor indicates which bit can
be changed.
3. Three sets of keys are used to move the cursor and change bit status:
a) Use the Up and Down Arrow Keys to move the cursor to the left or
right.
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.
c) Use the SHIFT+SET and SHIFT+RESET Keys to force-set or force-re-
set 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 and EM Area cannot be force-set or force-reset.
C
2
A
0
A
0
WRITE
,
RUN MONITOR PROGRAM
No OK OK
D0001 MONTR
0000010101010101
CHG
D0001 CHG?
~000010101010101
↑
↓
D0001 CHG?
10~0010101010101
B
1
D0001 CHG?
101~010101010101
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