Lenze PLC Designer PLC Designer (R2-x) - Manual (Page 648)

L-force | PLC Designer
PLC Designer Libraries
646 DMS 3.2 EN 02/2011 TD29

Example in ST:
arINT1 := FIND ('abcdef','de');
Note!
String functions are not "thread safe": When using tasks, string functions may only
be used in a single task. If the same function is used in different tasks, there is a
danger of overwriting.
19.1.2 Bistable Function Blocks...
SR
Provided by standard.lib.
Making Bistable Function Blocks Dominant:
Q1 = SR (SET1, RESET) means:
Q1 = (NOT RESET AND Q1) OR SET1
The input variables SET1 and RESET as well as the output variable Q1 are type BOOL.
Declaration example:
SRInst : SR ;
Example in IL:
CAL SRInst(SET1 := VarBOOL1, RESET := VarBOOL2)
LD SRInst.Q1
ST VarBOOL3
Example in FBD: