One Digit Shift Left: Sld(068) - Omron SYSMAC CVM1 Series Operation Manual

Shift Instructions

5-14-23 ONE DIGIT SHIFT LEFT: SLD(068)

Ladder Symbol
(068)
SLD
Variations
j SLD(068)
Description
Precautions
Flags
Example
0000
00
St E
When the execution condition is OFF, SLD(068) is not executed. When the ex-
ecution condition is ON, SLD(068) 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.
St must be less than or equal to E. St and E must be in the same data area.
The shift operation might not be completed if a power failure occurs during ex-
ecution of the instruction.
Note Refer to page 101 for general precautions on operand data areas.
Content of *DM word is not BCD when set for BCD.
ER (A50003):
St and E are in different areas, or St is greater than E.
When CIO 000000 is ON in the following example, 0 is shifted into digit 0 of
D00010, the contents of all digits in D00010 are shifted one digit to the left, the
content of digit 3 of D00010 is shifted to digit 0 of D00011, the contents of all dig-
its in D00011 are shifted one digit to the left, the content of digit 3 of D00011 is
shifted to digit 0 of D00012, the contents of all digits in D00012 are shifted one
digit to the left, and the content of digit 3 of D00012 is lost.
(068)
SLD D00010 D00012
Operand Data Areas
St: Starting word CIO, G, A, DM
E: End word CIO, G, A, DM
...
E
8 F C 5 D
Lost data
E: D00012
St+1: D00011
3 2 1 0 3 2 1
16 16 16 16 16 16 16
1 2 3 4 5 6 7
Lost data
E: D00012
St+1: D00011
3 2 1 0 3 2 1
16 16 16 16 16 16 16
2 3 4 5 6 7 8
Section 5-14
St
7 9 1
0
Address Instruction
00000 LD
00001 SLD(068)
St: D00010
0 3 2 1 0
16 16 16 16 16
8 9 A B C
"0"
St: D00010
0 3 2 1 0
16 16 16 16 16
9 A B C 0
Operands
00000
D00010
D00012
173