Allen-Bradley MicroLogix 1400 User Manual

Publication 1766-RM001A-EN-P - October 2008
Math Instructions 235
Instruction Operation
When the rung is true, this instruction shall compute the expression and
place the result in Destination.
Note that it takes on the attributes of the instruction which it is computing.
The following instructions can be included in the expression section of
CPT instruction.
CPT Instruction Valid Addressing Modes and File Types
For definitions of the terms used in this table see Using the Instruction Descriptions on page 92.
Parameter
Data Files
Function Files
(1)
CS - Comms IOS - I/O DLS - Data Log
(2)
Address Mode
(3)
Address Level
O I S B T, C, R N F ST L MG, PD RI/RIX PLS RTC HSC PTOX, PWMX STI EII BHI MMI LCD Direct Indirect Immediate Int16 Immediate Int32 Immediate Float Bit Word Double Word Element Float
Destination • • • • • • • • • • •• •
(1) PTOX and PWMX files are only for use with MicroLogix 1400 BXB or BXBA unit.
(2) The Data Log Status file can only be used for the following math instructions: ADD, SUB, MUL, DIV, NEG, and SCP.
(3) See Important note about indirect addressing.
IMPORTANT
You cannot use indirect addressing with: S, MG, PD, RTC, HSC, PTOX,
PWMX, STI, EII, BHI, MMI, CS, IOS, and DLS files.
CPT Instruction Operation
Sub Instructions Symbol
Addition + (ADD)
Subtraction - (SUB)
Multiplication * (MUL)
Division / (DIV)
Square Root SQR
Negate - (NEG)
Logical Not NOT
Logical Exclusive Or XOR
Logical Inclusive Or OR
Logical And AND
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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