Allen-Bradley MicroLogix 1400 User Manual

Publication 1766-RM001A-EN-P - October 2008
206 Math Instructions
NEG - Negate
Instruction Type: output
Use the NEG instruction to change the sign of the Source and place the
result in the Destination.
CLR - Clear
Instruction Type: output
Use the CLR instruction to set the Destination to a value of zero.
ABS - Absolute Value
Instruction Type: output
Exeution Time for the ABS Instruction
The ABS instruction takes the absolute value of the Source and places it in
the Destination. The data range for this instruction is
-2,147,483,648…2,147,483,647 or IEEE-754 floating point value.
NEG
Negate
Source N7:0
0<
Dest N7:1
0<
NEG
Execution Time for the NEG Instruction
Controller Data Size When Rung Is:
True False
MicroLogix 1400 word 1.3570 µs 0.3548 µs
long word 1.3660 µs 0.3413 µs
CLR
Clear
Dest N7:0
0<
CLR
Execution Time for the CLR Instruction
Controller Data Size When Rung Is:
True False
MicroLogix 1400 word 2.0522 µs 0.3714 µs
long word 2.0125 µs 0.3691 µs
ABS
Absolute Value
Source N7:0
0<
Dest N7:1
0<
ABS
Controller Data Size When Rung Is:
True False
MicroLogix 1400 word 1.4410 µs 0.3750 µs
long word 1.5390 µs 0.3730 µs
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Allen-Bradley MicroLogix 1400 Specifications

General

Processor	32-bit
Expansion Modules	Up to 7 expansion I/O modules
Power Supply	24V DC or 120/240V AC
Programming Software	RSLogix 500
Communication Ports	Ethernet, RS-232/RS-485 combo port
Controller Type	Programmable Logic Controller (PLC)
Series	MicroLogix
Digital Outputs	12
Analog Inputs	6 (embedded)
Analog Outputs	2 (embedded)
High-Speed Counter	6 high-speed counters
Pulse Output	2 (embedded)
Ethernet Port	Yes