Omron SYSMAC CV Series Operation Manual page 51

Data Area Structure
Converting Decimal to
Signed Binary
Bit number 15 14
Contents 0
Bit number 15 14
Contents 1
Bit number 15 14
Contents 1
Positive signed binary data is identical to unsigned binary data (up to 32,767)
and can be converted using BIN(100). The following procedure converts nega-
tive decimal values between –32,768 and –1 to signed binary. In this example
–12345 is converted to CFC7.
1. First take the absolute value (12345) and convert to unsigned binary:
13 12 11 10 09
0 1 1 0 0
2. Next take the complement:
13 12 11 10 09
1 0 0 1 1
3. Finally add one:
13 12 11 10 09
1 0 0 1 1
Reverse the procedure to convert negative signed binary data to decimal.
08 07 06 05 04
0 0 0 0 1
08 07 06 05 04
1 1 1 1 0
08 07 06 05 04
1 1 1 1 0
Section 3-2
03 02 01 00
1 1 0 0 1
03 02 01 00
0 0 1 1 0
03 02 01 00
0 0 1 1 1
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