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Data Shift Instructions Section 3-8
3-8-3 ASYNCHRONOUS SHIFT REGISTER: ASFT(017)
Purpose Shifts all non-zero word data within the specified word range either towards St
or toward E, replacing 0000 hex word data.
Ladder Symbol
Variations
Applicable Program Areas
Operands C: Control Word
Note St and E must be in the same data area.
Operand Specifications
ASFT(017)
C
E
C: Control word
St: Starting word
E: End word
St
Variations Executed Each Cycle for ON Condition ASFT(017)
Executed Once for Upward Differentiation @ASFT(017)
Executed Once for Downward Differentiation Not supported
Immediate Refreshing Specification Not supported
Block program areas Step program areas Subroutines Interrupt tasks
OK OK OK OK
15 14 13 12
Shift direction
0: Non-zero data shifted toward E
1: Non-zero data shifted toward St
Shift Enable Bit
0: Shift disabled
1: Shift enabled
Clear Bit
0: Data not reset
1: All data from St to E is reset
Area C St E
CIO Area CIO 0 to CIO 6143
Work Area W0 to W511
Holding Bit Area H0 to H511
Auxiliary Bit Area A0 to A959 A448 to A959
Timer Area T0000 to T4095
Counter Area C0000 to C4095
DM Area D0 to D32767
Indirect DM addresses
in binary
@ D0 to @ D32767
Indirect DM addresses
in BCD
*D0 to *D32767
Constants ---
Data Registers DR0 to DR15 ---
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