And, Or, And Exclusive Or - Siemens SIMATIC S7 System Manual

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Program instructions

7.11 Logical operations

AND, OR, and exclusive OR

Non-fatal errors with ENO = 0

0006H Indirect address

Input / output

The AND Byte, AND Word, and AND Double Word instructions logically AND the corre-

sponding bits of two input values IN1 and IN2 and load the result in a memory location

assigned to OUT.

LAD and FBD: IN1 AND IN2 = OUT

STL: IN1 AND OUT = OUT

The OR Byte, OR Word, and OR Double Word instructions logically OR the correspond-

ing bits of two input values IN1 and IN2 and load the result in a memory location as-

signed to OUT.

LAD and FBD: IN1 OR IN2 = OUT

STL: IN1 OR OUT = OUT

The Exclusive OR Byte, Exclusive OR Word, and Exclusive OR Double Word instruc-

tions logically XOR the corresponding bits of two input values IN1 and IN2 and load the

result in a memory location OUT.

LAD and FBD: IN1 XOR IN2 = OUT

STL: IN1 XOR OUT = OUT

SM bits affected

SM1.0 Result of operation = zero

IB, QB, VB, MB, SMB, SB, LB, AC, *VD, *LD, *AC, Constant

IW, QW, VW, MW, SMW, SW, T, C, LW, AC, AIW, *VD, *LD, *AC, Constant

ID, QD, VD, MD, SMD, SD, LD, AC, HC, *VD, *LD, *AC, Constant

IB, QB, VB, MB, SMB, SB, LB, AC, *VD, *AC, *LD

IW, QW, VW, MW, SMW, SW, T, C, LW, AC, *VD, *AC, *LD

System Manual, V2.3, 07/2017, A5E03822230-AF

S7-200 SMART

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