BCD_TO_BIN

Function - Converts a BCD (Binary Coded Decimal) value to a binary value

Inputs

IN : DINT Integer value in BCD

Outputs

Q : DINT Value converted to integer
or 0 if IN is not a valid positive BCD value

Truth table (examples)

IN	Q
-2	0 (invalid)
0	0
16 (16#10)	10
15 (16#0F)	0 (invalid)

Remarks

The input must be positive and must represent a valid BCD value. In LD language, the operation is executed only if the input rung (EN) is TRUE. The output rung (ENO) keeps the same value as the input rung. In IL, the input must be loaded in the current result before calling the function.

ST Language

Q := BCD_TO_BIN (IN);

FBD Language

LD Language

(* The function is executed only if EN is TRUE *)
(* ENO keeps the same value as EN *)

IL Language:

Op1: LD         IN
     BCD_TO_BIN
     ST         Q