Nematron Pointe Controller - Manual (Page 425)

Pointe Controller User Guide Appendix C: Ladder Diagram Block Reference
423
C.7.11 Find sub-string (FIND)
When used in a Ladder Diagram, the FIND block finds the first occurance, if any,
of a sub-string within a given string. The position of the sub-string is sent to
output.
Select the tool (from the String Blocks toolbar) and click on a ladder rung to
insert the following block:
Once the block is inserted, you can double-click on it to configure it.
Functional Description
This block always passes the Enable input state (EN) through to the Enable Out
output state (ENO) without change; when EN becomes on, ENO is turned on, and
when EN becomes off, ENO is turned off.
When EN becomes on, the block function is executed: the Input String 1 (IN1) is
searched for the first occurance, if any, of the Input String 2 (IN2). If IN2 is found
within IN1, then the starting position is placed in the Output Value (OUT). If IN2
is not found, then 0 is placed in OUT.
For example:
IN1: ‘This is OpenControl.’
IN2: ‘is’
OUT: 3
The block function is executed every time the ladder is scanned , so long as EN
remains on. If EN becomes off, then OUT remains at its last calculated value until
EN becomes on and the block function is executed again.