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4-2SectionProgramming Console Operations
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4-2-23 Binary Data Modification
This operation is used to change the status of a word’s bits when the word is
monitored using the procedure described in 4-2-16 Binary Monitor. It is pos-
sible in MONITOR or PROGRAM mode only.
RUN MONITOR PROGRAM
No OK OK
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 CPU Unit, Expansion Units, or Expansion I/O Units may operate unex-
pectedly.
1, 2, 3... 1. Monitor the status of the desired word according to the procedure described
4-2-16 Binary Monitor.
(Binary monitor)
c010 MONTR
1000010101010101
Bit 15 Bit 00
2. Press the CHG Key to begin binary data modification.
CHG
c010 CHG?
000010101010101
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 and right.
↓ ↓
c010 CHG?
10 0010101010101
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
c010 CHG?
101 010101010101
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 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
c010 MONTR
1010010101010101
4-2-24 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).
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