129
Flags ER: Indirectly addressed DM word is non-existent. (Content of *DM word
is not BCD, or the DM area boundary has been exceeded.)
CY: Receives the data of bit 15.
EQ: ON when the content of Wd is zero; otherwise OFF.
5-13-7 ONE DIGIT SHIFT LEFT – SLD(74)
Ladder Symbols Operand Data Areas
SLD(74)
St
E
@SLD(74)
St
E
St: Starting word
IR, AR, DM, HR, LR
E: End word
IR, AR, DM, HR, LR
St and E must be in the same data area, and E must be greater than or equal
to St.
When the execution condition is OFF, SLD(74) is not executed. When the
execution condition is ON, SLD(74) shifts data between St and E (inclusive)
by one digit (four bits) to the left. 0 is written into the rightmost digit of the St,
and the content of the leftmost digit of E is lost.
5
E
8 1
St
F C 97D
Lost data 0
...
If a power failure occurs during a shift operation across more than 50 words,
the shift operation might not be completed.
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.)
5-13-8 ONE DIGIT SHIFT RIGHT – SRD(75)
Ladder Symbols Operand Data Areas
SRD(75)
E
St
@SRD(75)
E
St
E: End word
IR, AR, DM, HR, LR
St: Starting word
IR, AR, DM, HR, LR
Limitations
Description
Precautions
Data Shifting Section 5-13