Hitachi HIDIC MICRO-EH Applications Manual page 138

Item number Application instructions-16
Ladder format
NEG (d)
Instruction format
NEG (d)
Usable I/O
d I/O to take complement
Function
•
Calculates two's complements of d (Reverses each bit contained in d and adds "1." However, C (R7F0) remains
unchanged).
Before execution 1 1 0
0 0 1
+
After execution 0 0 1
Notes
•
Use edge trigger as the startup condition for this instruction.
Program example
R000 DIF0
NEG (WR0000)
Program description
•
When R000 rises, 2's complement of the content of WR0000 is obtained.
Example) If WR0000 is H1234, WR0000 = HEDCC after the instruction is executed;
WR0000 = H1234 when executed again
Name
Condition code
R7F4 R7F3 R7F2
DER ERR SD
Number of steps
Condition
Bit
R, TD, SS,
X Y M CU, CT WX WY
0 1 1 0 0 0 0 0
1 0 0 1 1 1 1 1
1 0 0 1 1 1 1 1
LD R000
AND DIF0
[
NEG WR0000
]
5-88
Chapter 5 Instruction Specifications
Two's complement (NEGATE)
Processing time (µs)
R7F1 R7F0
Average Maximum
V C
22
Steps
2 29
Word Double word
WR,
WM TC DX DY
1 1 0 1 0
0 0 1 0 1
1
0 0 1 1 0
Remark
Upper case: W

Lower case: DW

DR,
Other
DM