Nematron Pointe Controller - Manual (Page 434)

Appendix C: Ladder Diagram Block Reference Pointe Controller User Guide
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C.9.5 Truncate (TRUNC)
When used in a Ladder Diagram, the TRUNC block truncates a floating-point
input value and discards its fractional (decimal) part. This is effectively the same
as rounding the value down to the nearest integer, although the value always
remains a floating-point number.
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
truncated and its fractional (decimal) part is discarded. The result is sent to the
Output Value (OUT).
For example, the floating-point value 123.45 is truncated to 123.00.
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.
IN Input
Value req %IF
%MF
%QF
The input value.
OUT Output
Value req %MF
%QF
The result of truncating the input
value.