Mitsubishi MELSEC Q Series Programming Manual page 329

6.4.9
16-bit and 32-bit data exchanges (XCH(P),DXCH(P))
XCH(P),DXCH(P)
XCH, DXCH
XCHP, DXCHP
Setting
Data
D1
D2
Function
XCH
(1) Conducts 16-bit data exchange between
Before execution
After execution
DXCH
(1) Conducts 32-bit data exchange between
Before execution
After execution
Command
Command
, : Head number of the devices where the data to be exchanged is stored (BIN 16/32 bits)
D1 D2
Internal Devices
R, ZR
Bit Word
D1
b15 b8 b7
0 1 1 1 0 0 0 0 0 0 0 0 0 1 1 1
D1
b15 b8 b7
1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0
+1
D1
D1
b31 b16 b15
1 1 1 1 0 0 0 1 1 1 0 0 0 0
+1
D1 D1
b31 b16 b15
0 0 0 0 1 1 1 1 1 1 1 1 1 1
High
Basic
performance
indicates an instruction symbol of XCH, DXCH.
P
J \
U \G
Bit Word
and .
D1 D2
D2
b0 b15 b8 b7
1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0
D2
b0 b15 b8 b7
0 1 1 1 0 0 0 0 0 0 0 0 0 1 1 1
+1, and +1,
D1 D1 D2 D2
+1
D2
b0 b31 b16 b15
0 0 0 0 1 1 1 1 1 1
+1
D2
b0 b31 b16 b15
1 1 1 1 0 0 0 1 1 1
XCH(P),DXCH(P)
Process
Redundant Universal LCPU
D1 D2
D1 D2
Zn Constants Other
––
––
b0
b0
.
D2
b0
1 1 1 1
D2
b0
0 0 0 0
6-127
1
2
3
4
4
6
7
8