Registers
12
S7-400 Instruction List
A5E00267845-01
Registers
ACCU1 to ACCU4 (32 Bits)
The accumulators are registers for processing bytes, words or double words. The address identifiers are loaded into the accumulators,
where they are logically gated. The result of the logic operation (RLO) is in ACCU1 and can be transferred from there to a memory cell.
The accumulators are 32 bits long.
Accumulator designations :
ACCU Bits
ACCUx (x = 1 to 4) Bit 0 to 31
ACCUx-L Bit 0 to 15
ACCUx-H Bit 16 to 31
ACCUx-LL Bit 0 to 7
ACCUx-LH Bit 8 to 15
ACCUx-HL Bit 16 to 23
ACCUx-HH Bit 24 to 31
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