Omron CP - PROGRAMMING MANUAL 05-2007 Programming Manual page 308

Data Shift Instructions
Applicable Program Areas
Note
Operand Specifications
Description
E
Lost
Flags
Precautions
Block program areas
Not allowed OK
St and E must be in the same data area.
Area
CIO Area
Work Area
Holding Bit Area
Auxiliary Bit Area
Timer Area
Counter Area
DM Area
Indirect DM addresses
in binary
Indirect DM addresses
in BCD
Constants
Data Registers
Index Registers
Indirect addressing
using Index Registers
When the execution condition on the shift input changes from OFF to ON, all
the data from St to E is shifted to the left by one bit (from the rightmost bit to
the leftmost bit), and the ON/OFF status of the data input is placed in the
rightmost bit.
St+1, St+2, ...
Name Label
Error Flag ER
The bit data shifted out of the shift register is discarded.
When the reset input turns ON, all bits in the shift register from the rightmost
designated word (St) to the leftmost designated word (E) will be reset (i.e., set
to 0). The reset input takes priority over other inputs.
St must be less than or equal to E, but even when St is set to greater than E
an error will not occur and one word of data in St will be shifted.
When St and E are designated indirectly using index registers and the actual
addresses in I/O memory are not within memory areas for data, an error will
occur and the Error Flag will turn ON.
Step program areas Subroutines
OK
St
CIO 0 to CIO 6143
W0 to W511
H0 to H511
A448 to A959
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,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
Operation
ON if the indirect IR address for St and E is not in the CIO,
AR, HR, or WR data areas.
OFF in all other cases.
Section 3-8
Interrupt tasks
OK
E
St
Status of data input
for each shift input
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