Nematron Pointe Controller - Manual (Page 429)

Pointe Controller User Guide Appendix C: Ladder Diagram Block Reference
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C.9 Miscellaneous Blocks
C.9.1 Convert to Boolean (TO_BOOL)
When used in a Ladder Diagram, the TO_BOOL block converts any input value
into an equivalent boolean (bit) tag. All non-zero inputs are converted to 1, while
zero inputs are converted to 0.
Select the tool (from the Miscellaneous 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 Value (IN) is
converted into its equivalent boolean (bit) value and the result is sent to the
Output Value (OUT). If IN is any non-zero value, then OUT is set to 1. If IN is zero,
then OUT is set to 0.
NOTE: When IN is a String, conversion to a numeric representation is attempted.
If the conversion succeeds, then OUT is set to 1. If the conversion fails, then OUT is
set to 0.
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.
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.
ENO Enable
Out no - The state of the rung (off/on)
passed to the right.