Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 Reference Manual page 407

Data Shift Instructions
Flags
Precautions
Examples
St
E
St
E
Note ASFT(017) can be processed in the background. Refer to the SYSMAC CS/
CJ/NSJ Series PLC Programming Manual (W394) for details.
Name
Error Flag ER
When the Clear Flag (bit 15 of C) goes ON, all bits in the shift register, from St
to E, will be reset (i.e., set to 0). The Clear Flag has priority over the Shift
Enable Bit (bit 14 of C).
When St is greater than E an error will be generated and the Error Flag will
turn ON.
Shifting Data:
If the Shift Enable Bit, CIO 030014, goes ON when CIO 000000 is ON, all
words with non-zero data content from CIO 0100 through CIO 0109 will be
shifted in the direction designated by the Shift Direction Bit, CIO 030013 (e.g.,
1: Toward St) if the word to the left of the non-zero data is all zeros.
Convert
. . .
Convert
Non-zero data
. . .
Zero data
Label
ON when St is greater than E.
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.
Section 3-9
Shift direction
Shift enabled
Clear
Operation
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