Nematron Pointe Controller - Manual (Page 437)

Pointe Controller User Guide Appendix C: Ladder Diagram Block Reference
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C.9.8 Integer to BCD (TO_BCD)
When used in a Ladder Diagram, the TO_BCD block converts a regular integer
value into an equivalent binary coded decimal (BCD).
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: each digit of the Input
Value (IN) is separately converted into a 4-bit “nibble, and then the nibbles are
concatenated into a single binary which is placed in the Output Value (OUT).
For example, an integer value of 5319 would be converted in the following
manner:
DIGIT 5 3 1 9
NIBBLE 0101 0011 0001 1001
The resulting BCD is 0101001100011001.
NOTE: Given the 32-bit limit on the size of Logic Memory variables, the largest
integer that can be practically converted into a BCD is 99999999.
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.