Omron CS1G/H-CPUxxH Instructions Manual page 677

Table Data Processing Instructions
Examples
R1
3-17-13 FRAME CHECKSUM: FCS(180)
Purpose
Ladder Symbol
Variations
656
When CIO 000000 is ON in the following example, SUM(184) adds 10 bytes
of unsigned binary data beginning with the rightmost byte of D00100 and
writes the result to D00201 and D00200.
Number of words/bytes
C+1: D00301
Data type
0: Binary
Data type
0: Unsigned binary data
C: D00300
R1:
C 3
9 F
2 7
2 A
D C
D: D00200
0 3
D+1: D00201 0 0
Calculates the FCS value for the specified range and outputs the result in
ASCII.
Variations Executed Each Cycle for ON Condition
Executed Once for Upward Differentiation
Executed Once for Downward Differentiation Not supported.
Immediate Refreshing Specification
Always 0.
Starting byte
1: Rightmost byte
Units
1: Bytes
10 bytes
Table length
2 A
2 A
2 0
2 0
5 5
7 8
0 0
FCS(180)
C
C: First control word
R1
R1: First word in range
D
D: First destination word
Section 3-17
The shaded bytes are added.
FCS(180)
@FCS(180)
Not supported.