Examples Of Addressing, Continued - Siemens CPU 412-1 Instruction Manual

Examples of Addressing, continued

Area-Internal Register-Indirect Addressing
A I [AR1,P#12.2]
Area-Crossing Register-Indirect Addressing
For area-crossing register-indirect addressing, the address must also contain an area identifier. The address is in the address register.
The area identifiers are as follows:
Area Coding
identifier (binary)
P 1000 0000
I 1000 0001
Q 1000 0010
M 1000 0011
DB 1000 0100
DI 1000 0101
L 1000 0110
VL 1000 0111
L B [AR1,P#8.0]
A [AR1,P#32.3]
Addressing Via Parameters
A Parameter
S7-400 Instruction List
A5E00267845-01
Addressing Examples
Area
hex.
80 I/O area
81 Input area
82 Output area
83 Bit memory area
84 Data area
85 Instance data area
86 Local data area
87 Predecessor local data area (access to local data of invoking block)
Examples of Addressing
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