Toshiba PROSEC T1-16S PLC User's Manual - CTi Automation

7. Instructions
FUN 122 BC Bit count
Expression
Input −[ A BC B ]− Output
202 T1-16S User’s Manual
6F3B0253
Function
When the input is ON, this instruction counts the number of ON (1) bits of A, and stores the result
in B.
Execution condition
Input Operation Output
OFF No execution OFF
ON Execution ON
Operand
Name Device Register Constant Index
X Y R S T. C. XWYWRWSW T C D I J K
A Source √ √ √ √ √ √ √ √ √ √ √
B Count data √ √ √ √ √ √
Example
When R020 is ON, the number of ON (1) bits of the register RW032 is counted, and the result
is stored in D0102.
The following figure shows an operation example.
F E D C B A 9 8 7 6 5 4 3 2 1 0
RW032 0 0 1 0 0 1 1 1 0 1 0 1 1 0 0 0
Counts the number of ON (1) bits = 7
F E D C B A 9 8 7 6 5 4 3 2 1 0
D0102 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1
The result data (7) is stored in binary
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