Lenze PLC Designer PLC Designer (R2-x) - Manual (Page 644)

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

Example in ST:
VarSTRING1 := CONCAT ('SUSI','WILLI');
Note!
The CONCAT function does not work, if nested over more than five levels.

Stop!
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.
INSERT
Provided by standard.lib.
INSERT inserts a string into another string at a defined point.
The input variables STR1 and STR2 are type STRING, POS is type INT and the return
value of the function is type STRING.
INSERT(STR1, STR2, POS) means: insert STR2 into STR1 after position POS.
Example in IL:
LD 'SUSI'
INSERT 'XY',2
ST VarSTRING1 (* Result is 'SUXYSI' *)
Example in FBD: