Siemens S7-1200 - Page 208

Basic instructions
7.1 Bit logic operations
S7-1200 Programmable controller
208 System Manual, 03/2014, A5E02486680-AG
Table 7- 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