Nematron Pointe Controller - Manual (Page 388)

Appendix C: Ladder Diagram Block Reference Pointe Controller User Guide
386
Param Name Config Var Type Description
IN1 Input
Value 1 req any Input
any Output
any Memory
T_DONE
T_VALUE
T_PREVAL
The first input value. The function
checks to see if this value is not
equal to the second input value.
IN2 Input
Value 2 req any Input
any Output
any Memory
T_DONE
T_VALUE
T_PREVAL
Numeric
The second input value.
C.4.5 Less than or Equal to (LE)
When used in a Ladder Diagram, the LE block checks to see if one input is less
than or equal to another and uses the result — false or true — to set the output
rung state.
Select the tool (from the Comparison 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
When EN becomes on, the block function is executed: the Input Value 1 (IN1) is
compared with the Input Value 2 (IN2) and the result is placed in the Output (Q).
If IN1 is less than or equal to IN2, then “true is placed in Q. If IN1 is not less than
or equal to IN2, then “false is placed in Q.
The result placed in Q determines the state of the rung passed to the right: a
“true result turns the rung on and a “false result turns the rung off.
The block function is executed every time the ladder is scanned , so long as EN
remains on. If EN becomes off, then Q is immediately turned off regardless of the
values of IN1 and IN2.