304
Data Shift Instructions Section 3-8
Applicable Program Areas
Note St and E must be in the same data area.
Operand Specifications
Description SRD(075) shifts data between St and E by one digit (4 bits) to the right. “0” is
placed in the leftmost digit (bits 15 to 12 of E), and the content of the rightmost
digit (bits 3 to 0 of St) is lost.
Flags
Precautions When St is greater than E, an error will be generated and the Error Flag will
turn ON.
When SRD(075) is executed, the Equals Flag and Negative Flag will turn
OFF.
Note When large amounts of data are shifted, the instruction execution time is quite
long. Always take care that the power is not cut while SRD(075) is being exe-
cuted, causing the shift operation to stop halfway through.
Block program areas Step program areas Subroutines Interrupt tasks
OK OK OK OK
Area St E
CIO Area CIO 0 to CIO 6143
Work Area W0 to W511
Holding Bit Area H0 to H511
Auxiliary Bit Area 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 ---
Index Registers ---
Indirect addressing
using Index Registers
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
ES
Los
To Next Page
Loading...
