ABB REF615 E - SR Function Block

Table 115: SWITCHR Output signals
Name Type Description
OUT REAL Real switch output
3.14.1.11 SR function block
Function block
GUID-0B62CAED-F8A4-4738-B546-677DA362FE24 V1 EN
Figure 52: Function block
Functionality
The SR flip-flop output Q can be set or reset from the S or R inputs. S input has a
higher priority over the R input. Output NOTQ is the negation of output Q.
The statuses of outputs Q and NOTQ are not retained in the
nonvolatile memory.
Table 116: Truth table for SR flip-flop
S
R Q
0 0
0
1)
0 1 0
1 0 1
1 1 1
1) Keep state/no change
Signals
Table 117: SR Input signals
Name
Type Default Description
S BOOLEAN 0=False Set Q output when set
R BOOLEAN 0=False Resets Q output when
set
Table 118: SR Output signals
Name
Type Description
Q BOOLEAN Q status
NOTQ BOOLEAN NOTQ status
1YHT530004D05 D Section 3
Basic functions
615 series 117
Technical Manual