Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 User Manual

741
Table Data Processing Instructions Section 3-17
Note FCS(180) can be processed in the background. Refer to the SYSMAC CS/CJ/
NSJ Series PLC Programming Manual (W394) for details.
Flags
Examples When CIO 000000 is ON in the following example, FCS(180) calculates the
FCS value for the 10 bytes of data beginning with the rightmost byte of
D00100 and writes the result to D00200.
R1
Calculation
C (Table length)
ASCII conversion
FCS value
Name Label Operation
Error Flag ER ON if the content of C is not within the specified range of
0001 through FFFF.
ON if the Communications Port Enabled Flag for the com-
munications port number specified as the Com Port num-
ber for Background Execution is OFF when background
processing is specified.
OFF in all other cases.
C: D00300
C+1: D00301
R1:
D: D00200
0 2
0 4
0 6
0 8
0 0
3 0
0 1
0 3
0 5
0 7
0 0
3 8
R1
Always 0.
Units
1: Bytes
Starting byte (Effective only if bit 13 is 1.)
1: Rightmost byte
Always 0.
The FCS value for the
shaded bytes is calculated
and converted to ASCII.
Table length
10 bytes

Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 Specifications

General

Brand	Omron
Model	SYSMAC CJ - REFERENCE MANUAL 08-2008
Category	Controller
Language	English