Omron SYSMAC CJ - REFERENCE MANUAL 08-2008

350
Data Movement Instructions Section 3-8
Description XCHG(073) exchanges the contents of E1 and E2.
Flags
Note In CS1-H, CJ1-H, CJ1M, and CS1D (for Single-CPU System) CPU Units,
these Flags are left unchanged.
In CS1 and CJ1 CPU Units, these Flags are turned OFF.
Example When CIO 000000 is ON in the following example, the content of D00100 is
exchanged with the content of D00200.
3-8-11 DOUBLE DATA EXCHANGE: XCGL(562)
Purpose Exchanges the contents of a pair of consecutive words with another pair of
consecutive words.
Ladder Symbol
Indirect DM/EM
addresses in BCD
*D00000 to *D32767
*E00000 to *E32767
*En_00000 to *En_32767
(n = 0 to C)
Constants ---
Data Registers DR0 to DR15
Index Registers ---
Indirect addressing
using Index Registers
,IR0 to ,IR15
–2048 to +2047, IR0 to –2048 to +2047, IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –) IR0 to, –(– –) IR15
Area E1 E2
E2E1
Name Label Operation
Error Flag ER Unchanged (See note.)
Equals Flag = Unchanged (See note.)
Negative Flag N Unchanged (See note.)
XCGL(562)
E1
E2
E1: First exchange word
E2: Second exchange word