Siemens SIMATIC IM 151/CPU - Page 169

Instruction List
B-35
ET 200S Interface Module IM 151/CPU
A5E00058783-01
B.20 Load and Transfer Instructions for Address Registers
Loading of a double word from a memory area or register into AR1 or AR2 or
transfer of a double word from AR1 or AR2 to a memory area or register.
The status word is not affected.
In-
struc-
tion
Address
ID
Description
Length
in
Words
Typical Execution Time in
s
LAR1
–
AR2
DBD
DID
m
LD
MD
Load contents from ...
ACCU1
Address register 2
Data double word
Instance data double word
32-bit constant as pointer
Local data double word
Memory double word
... into AR1
1
1
2
2
3
2
2
0.3
0.3
3.8
3.8
0.5
1.5
1.4
LAR2
–
DBD
DID
m
LD
MD
Load contents from ...
ACCU1
Data double word
Instance data double word
32-bit constant as pointer
Local data double word
Memory double word
... into AR2
1
2
2
3
2
2
0.3
3.8
3.8
0.5
1.5
1.4
TAR1
–
AR2
DBD
DID
LD
MD
Transfer contents of AR1 to ...
ACCU1
Address register 2
Data double word
Instance data double word
Local data double word
Memory double word
1
1
2
2
2
2
0.7
0.3
4.3
4.3
1.6
1.5
TAR2
–
DBD
DID
LD
MD
Transfer contents of AR2 to ...
ACCU1
Data double word
Instance data double word
Local data double word
Memory double word
1
2
2
2
2
0.7
4.3
4.3
1.6
1.5
CAR Exchange the contents of AR1 and AR2 1 0.5