Rockwell Automation 1747-PT1, D1747NP002 Hand-Held Terminal - Manual (Page 286)

Chapter 20
Math Instructions
20–10
NEG
NEGATE
Source
N7:0
98
Dest N7:1
–98
Negate NEG Output Instruction
(NEG)
F1 F2 F3 F4 F5
ZOOM on NEG –(NEG)– 2.3.0.0.2
NAME: NEGATE
SOURCE: N7:0 98
DEST: N7:1 –98
EDT_DAT
HHT Ladder Display:
HHT Zoom Display:
Ladder Diagrams and APS Displays:
(online monitor mode)
The source value is subtracted from 0 and then stored in the destination.
(The destination contains the 2’s complement of the source.)
Using Arithmetic Status Bits
C cleared if 0 or overflow, otherwise set.
V set if overflow, otherwise reset. On overflow, the minor error flag is also
set. The value 32,767 is placed in the destination. Exception: If you are
using a Series C or later SLC 5/02 processor and have the Math Overflow
Selection Bit S:2/14 set, then the unsigned, truncated overflow remains in
the destination.
Z set if the result is zero; otherwise reset.
S set if the result is negative; otherwise reset.
Math Register
Unchanged.
Negate (NEG)