162
Flags ER: N is not BCD between 0000 and 2000.
S and S+N or D and D+N are not in the same data area.
Indirectly
addressed DM word
is non-existent. (Content of
∗
DM word is
not BCD, or the DM area boundary has been exceeded.)
5-16-5 DATA EXCHANGE – XCHG(73)
E1: Exchange word 1
IR, SR, AR, DM, HR, TC, LR
E2: Exchange word 2
IR, SR, AR, DM, HR, TC, LR
Ladder Symbols Operand Data Areas
XCHG(73)
E1
E2
@XCHG(73)
E1
E2
Description When
the execution condition is OFF
, XCHG(73) is
not executed. When the exe
-
cution condition is ON, XCHG(73) exchanges the content of E1 and E2.
E2E1
If
you want to exchange content of blocks whose size is greater than 1 word, use
work
words as an intermediate buf
fer to hold one of the blocks using XFER(70)
three times.
Flags ER: Indirectly
addressed DM word
is non-existent. (Content of
∗
DM word is
not BCD, or the DM area boundary has been exceeded.)
5-16-6 SINGLE WORD DISTRIBUTE – DIST(80)
S: Source data
IR, SR, AR, DM, HR, TC, LR, #
DBs: Destination base word
IR, SR, AR, DM, HR, TC, LR
Ladder Symbols
Operand Data Areas
C: Control word (BCD)
IR, SR, AR, DM, HR, TC, LR, #
DIST(80)
S
DBs
C
@DIST(80)
S
DBs
C
Limitations C
must be a BCD. If C
≤
6655, DBs must be in the same data area as DBs+C. If
C≥9000, DBs must be in the same data area as DBs+C–9000.
Description Depending
on the value of
C, DIST(80) will operate as a data distribution instruc
-
tion
or stack instruction. If C is between
0000 and 6655, DIST(80) will operate as
a
data
distribution instruction and copy the content of S to DBs+C. If the leftmost
digit
of
C is 9, DIST(80) will operate as a stack instruction and create a stack with
the number of words specified in the rightmost 3 digits of C.
Precautions Stack
operation will be unreliable if the specified stack length is dif
ferent from the
length specified in the last execution of DIST(80) or COLL(81).
When
the execution condition is OFF
,
DIST(80) is not executed. When the exe
-
cution condition is ON, DIST(80) copies the content of S to DBs+C, i.e.,C is
added to DBs to determine the destination word.
2
DBs
+ C
3452
S
345
Data Distribution Operation
(C=0000 to 6655)
Data Movement Section 5-16
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