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Precautions If a power failure occurs during a shift operation across more than 50 words, the
shift operation might not be completed. Set the range between E and St to a
maximum of 50 words.
Flags ER: The St and E words are in different areas, or St is less than E.
Indirectly addressed DM word is non-existent. (Content of ∗DM word is
not BCD, or the DM area boundary has been exceeded.)
5-15-9 WORD SHIFT – WSFT(16)
Ladder Symbols Operand Data Areas
WSFT(16)
St
E
@WSFT(16)
St
E
St: Starting word
IR, SR, AR, DM, HR, LR
E: End word
IR, SR, AR, DM, HR, LR
Limitations St and E must be in the same data area, and St must be less than or equal to E.
Description When the execution condition is OFF, WSFT(16) is not executed. When the exe-
cution condition is ON, WSFT(16) shifts data between St and E in word units.
Zeros are written into St and the content of E is lost.
F0C234521029
E St + 1 St
345210290000
E St + 1 St
Lost
0000
Flags ER: The St and E words are in different areas, or St is greater than E.
Indirectly addressed DM word is non-existent. (Content of ∗DM word is
not BCD, or the DM area boundary has been exceeded.)
5-15-10 ASYNCHRONOUS SHIFT REGISTER – ASFT(17)
ASFT(17)
C
St
E
Ladder Symbols
ASFT(17)
C
St
E
C: Control word
IR, SR, AR, DM, HR, LR
St: Starting word
IR, SR, AR, DM, HR, LR
E: End word
IR, SR, AR, DM, HR, LR
Operand Data Areas
Limitations St and E must be in the same data area, and St must be less than or equal to E.
Data Shifting Section 5-15