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Siemens CPU 414-2 - Page 15

Siemens CPU 414-2
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Registers
13
S7-400 Instruction List
A5E00267845-01
Address Registers AR1 and AR2 (32 Bits)
The address registers contain the area-internal or area-crossing pointers for instructions using indirect addressing. The address registers
are 32 bits long.
The area-internal and/or area-crossing pointers have the following syntax:
Area-internal pointer 00000000 00000bbb bbbbbbbb bbbbbxxx
Area-crossing pointer yyyyyyyy 00000bbb bbbbbbbb bbbbbxxx
Legend: b Byte address
x Bit number
y Area identifier
(see “Examples of Addressing”)

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