Siemens Simatic S7 Series

Program instructions
7.1 Bit logic
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
161
Example SR and RS
LAD
STL
NETWORK 1
LD I0.0
LD I0.1
NOT
A Q0.0
OLD
= Q0.0
NETWORK 2
LD I0.0
LD I0.1
NOT
LPS
A Q0.1
= Q0.1
LPP
ALD
O Q0.1
= Q0.1
7.1.10
NOP (No operation) instruction
LAD
STL
Description
NOP N
The No Operation (NOP) instruction has no effect on the user program execution.
This instruction is not available in FBD mode. The operand N is a number from 0
to 255.
Inputs / Output
Data type
Operand
N (LAD, STL) BYTE N: Constant (0 to 255)