Relay Ladder; Structured Text - Allen-Bradley Logix5000 Reference Manual

Execution:
Condition
Prescan
Rung-condition-in is false
Rung-condition-in is true
EnableIn is set
Instruction execution
Postscan
temp_high
Relay Ladder Action
The rung-condition-out is set to false.
The rung-condition-out is set to false.
The instruction executes.
The rung-condition-out is set to true.
N/A
The instruction inserts the specified characters.
The rung-condition-out is set to false.
Example:
When temp_high is set, the INSERT instruction adds the characters in string_2 to
position 2 within string_1 and places the result in string_3:

Relay Ladder

Structured Text

IF temp_high THEN
INSERT(string_1,string_2,2,string_3);
temp_high := 0;
END_IF;
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
ASCII String Instructions (CONCAT, DELETE, FIND, INSERT, MID)
Structured Text Action
No action taken.
N/A
N/A
EnableIn is always set.
The instruction executes.
No action taken.
Chapter 18
INSERT
Insert String
Source A string_1
'AD'
Source B string_2
'BC'
Start 2
Dest string_3
'ABCD'
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