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Program execution control instructions
LBL
The LBL (Label for the JP and LOOP) instruction skips to the LBL instruction with the same
Description
number Num* as the JUMP (see page 1009) instruction if the predetermined trigger EN is in the
ON-state.
Skips to the LBL instruction with the same number Num* as the LOOP (see page 1012) instruction
and repeats execution of what follows until the data of a specified operand becomes "0".
It is not possible to use this function in a function block POU.
The maximum possible value that can be assigned to Num*
depends on the PLC type.
Availability of LBL (see page 1328)
PLC types
Data types
Variable
Data type
constant
Num*
In this example the function has been programmed in ladder diagram (LD) and structured text (ST).
Example
POU header
The same POU header is used for all programming languages.
Body
When the variable start is set to TRUE, the function is carried out.
LD
1014
Label for the JP- and LOOP-instruction
Function
Constant number that must correspond to JP, LOOP or F19
label number
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