Instruction Manual

Pointe Controller User Guide Appendix C: Ladder Diagram Block Reference
381
C.4 Comparison Blocks
C.4.1 Greater Than (GT)
When used in a Ladder Diagram, the GT block checks to see if one input is greater
than 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 greater than IN2, then “true is placed in Q. If IN1 is not
greater than 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.
Configuration Reference
The parameters of this block are described in the following table:
Param Name Config Var Type Description
EN Enable no - The state of the rung (off/on)
received from the left.
Q Output no - The result — false or true — of
comparing the two input values.
The result becomes the state of the
rung (off/on) passed to the right.