Siemens SIMATIC S7-1200 - Page 232

Basic instructions
8.1 Bit logic operations
S7-1200 Programmable controller
232 System Manual, V4.2, 09/2016, A5E02486680-AK
Table 8- 13 Data types for the parameters
Parameter
Data type
Description
S, S1
Bool
Set input; 1 indicates dominance
R, R1 Bool Reset input; 1 indicates dominance
INOUT
Bool
Assigned bit tag "INOUT"
Q Bool Follows state of "INOUT" bit
The "INOUT" tag assigns the bit address that is set or reset. The optional output Q follows
the signal state of the "INOUT" address.
Instruction
S1
R
"INOUT" bit
RS
0
0
Previous state
0
1
0
1
0
1
1
1
1
S
R1
SR
0
0
Previous state
0
1
0
1
0
1
1
1
0