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Allen-Bradley MicroLogix 1400 User Manual

Allen-Bradley MicroLogix 1400
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MicroLogix 1400
Programmable
Controllers
Bulletins 1766
Instruction Set Reference
Manual
efesotomasyon.com - Allen Bradley,Rockwell,plc,servo,drive

Table of Contents

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Allen-Bradley MicroLogix 1400 Specifications

General IconGeneral
Processor32-bit
Expansion ModulesUp to 7 expansion I/O modules
Power Supply24V DC or 120/240V AC
Programming SoftwareRSLogix 500
Communication PortsEthernet, RS-232/RS-485 combo port
Controller TypeProgrammable Logic Controller (PLC)
SeriesMicroLogix
Digital Outputs12
Analog Inputs6 (embedded)
Analog Outputs2 (embedded)
High-Speed Counter6 high-speed counters
Pulse Output2 (embedded)
Ethernet PortYes

Summary

Chapter 1: I/O Configuration

Embedded I/O

Details built-in discrete and analog I/O points.

MicroLogix 1400 Expansion I/O

Information on attaching expansion I/O modules and addressing slots.

I/O Addressing

Explains the I/O addressing scheme and provides examples.

Analog Inputs

Details on 4-channel, 12-bit resolution analog inputs.

Latching Inputs

Configuration of inputs for pulse catching and latching behavior.

Chapter 2: Controller Memory and File Types

Data Files

Description of data files for storing numeric information and I/O status.

Protecting Data Files During Download

Feature for updating ladder logic without destroying user-configured variables.

Static File Protection

Prevents modification of file values via communications except during download.

Password Protection

System for securing the controller with numeric passwords.

Chapter 3: Function Files

Real-Time Clock Function File

Provides year, month, day, hour, minute, and second information.

Communications Status File

Read-only file containing information on communication parameters and activity.

Input/Output Status File

Read-only file containing information on embedded and local expansion I/O status.

Chapter 4: Programming Instructions Overview

Instruction Set

Lists programming instructions by functional group and page number.

Addressing Modes

Describes immediate, direct, and indirect data addressing methods.

Chapter 5: Using the High-Speed Counter and Programmable Limit Switch

High-Speed Counter Overview

Details the six 100kHz high-speed counters and their inputs.

Programmable Limit Switch Overview

Explains configuring HSC for PLS or rotary cam switch operation.

Chapter 6: Using High-Speed Outputs

PTO - Pulse Train Output

Instruction to control and monitor physical high-speed outputs for pulse train generation.

PWM - Pulse Width Modulation

Instruction to control and monitor physical high-speed outputs for PWM waveform generation.

Chapter 7: Relay-Type (Bit) Instructions

XIC - Examine if Closed

Instruction to monitor a bit for an ON condition.

XIO - Examine if Open

Instruction to monitor a bit for an OFF condition.

OTE - Output Energize

Instruction to turn a bit location ON when rung conditions are true, OFF when false.

Chapter 8: Timer and Counter Instructions

Timer Instructions Overview

Explains timer files, elements (control, preset, accumulator), and time bases.

TON - Timer, On-Delay

Instruction to delay turning on an output when rung conditions become true.

TOF - Timer, Off-Delay

Instruction to delay turning off an output when rung conditions become false.

Chapter 9: Compare Instructions

EQU - Equal

Tests if two values are equal.

NEQ - Not Equal

Tests if one value is not equal to a second value.

GRT - Greater Than

Tests if one value is greater than a second value.

Chapter 10: Math Instructions

Instructions

Lists output instructions for computations.

ADD - Add

Adds two values and places the sum in the destination.

SUB - Subtract

Subtracts one value from another.

MUL - Multiply

Multiplies two values.

DIV - Divide

Divides one value by another.

Chapter 12: Conversion Instructions

DCD - Decode 4 to 1-of-16

Decodes a 4-bit value into a 1-of-16 bit destination.

ENC - Encode 1-of-16 to 4

Encodes a 16-bit source to a 4-bit value.

Chapter 13: Logical Instructions

AND - Bit-Wise AND

Performs a bit-wise logical AND operation.

OR - Logical OR

Performs a logical OR operation.

XOR - Exclusive OR

Performs a logical exclusive OR operation.

NOT - Logical NOT

Inverts the source bit-by-bit.

Chapter 15: File Instructions

CPW - Copy Word

Copies words of data from one location to another.

COP - Copy File

Copies a range of data from one file to another.

FLL - Fill File

Loads a file with a program constant or value.

BSL - Bit Shift Left

Loads and unloads data into a bit array one bit at a time.

FFL - First In, First Out (FIFO) Load

Loads words into a file and unloads them in FIFO order.

Chapter 16: Sequencer Instructions

SQC - Sequencer Compare

Compares masked source words with masked reference data.

SQO - Sequencer Output

Transfers masked source reference words to destination.

Chapter 17: Program Control Instructions

JMP - Jump to Label

Changes program execution order by jumping to a labeled rung.

JSR - Jump to Subroutine

Jumps to a designated subroutine and returns.

END - Program End

Ends the program scan or subroutine.

Chapter 18: Input and Output Instructions

IIM - Immediate Input with Mask

Updates input data prior to the normal input scan.

IOM - Immediate Output with Mask

Updates output data prior to the normal output scan.

Chapter 19: Using Interrupts

Information About Using Interrupts

Fundamental properties of user interrupts.

User Interrupt Instructions

Details interrupt instructions and their function files.

Selectable Timed Interrupt (STI) Function File

Mechanism to solve time-critical control requirements.

Chapter 20: Process Control Instruction

The PID Concept

Describes PID instruction for controlling physical properties via process loops.

PID - Proportional Integral Derivative

The core PID instruction for controlling process variables.

Input Parameters

Table showing input parameter addresses, data formats, and types.

Chapter 21: ASCII Instructions

General Information

General information about ASCII instructions and their function.

ASCII Instructions

Arranges ASCII instructions with write preceding read.

String (ST) Data File

File used by ASCII instructions to store ASCII character data.

Chapter 22: Communications Instructions

Messaging Overview

Information about MSG and SVC instructions.

MSG - Message

Instruction to transfer data between devices.

Local Messages

Controller's capability for communicating using local or remote messages.

Configuring a Local Message

Steps to configure a local message.

Configuring a Multi-hop Remote Message on EtherNet/IP Communication Channel

Steps to configure multi-hop remote messages over Ethernet/IP.

Chapter 23: Socket Interface Using CIP Generic Messaging

Overview

Allows communication with Ethernet devices not supporting EtherNet/IP.

Socket Interface Architecture

Implemented via Socket Object in Ethernet Subsystem.

Number and Type of Sockets

Describes UDP and TCP socket types.

Chapter 24: Recipe and Data Logging

RCP - Recipe

Saves custom lists of data associated with a recipe.

Data Logging

Captures and stores application data for later retrieval.

Configuring Data Log Queues

Steps to configure data logging queues.

DLG - Data Log Instruction

Triggers the saving of a record.

Chapter 25: LCD - LCD Information

LCD Overview

Using the LCD functions to monitor and modify data.

LCD Function File

Provides access to LCD and Trimpot configuration data.

Appendix A: MicroLogix 1400 Memory Usage and Instruction Execution Time

Programming Instructions Memory usage and Execution Time

Lists memory usage and execution time for programming instructions.

Appendix B: System Status File

System Status File

Lets you monitor controller operation and direct its behavior.

Status File Details

Details arithmetic flags, controller mode, and other status.

Appendix C: Fault Messages and Error Codes

Identifying Controller Faults

How to determine and correct faults.

Fault Messages

Lists fault messages, error codes, probable causes, and corrective actions.

Appendix D: Protocol Configuration

DH-485 Communication Protocol

Describes DH-485 network functions, architecture, and performance.

DF1 Full-Duplex Protocol

Point-to-point connection combining data transparency and simultaneous transmission.

DF1 Half-Duplex Protocol

Multi-drop single master/multiple slave network.

Modbus RTU Protocol

Shows configuration parameters for Modbus RTU.

ASCII Driver

Provides connection to other ASCII devices.

Ethernet Driver

Supports Ethernet communication via Channel 1.

Appendix E: Knowledgebase Quick Starts

# 17444 “Quick Start” Pulse Train Output (PTOX)

Guide for using PTO function and generating pulses.

# 17446 “Quick Start” Pulse Width Modulation (PWMX)

Guide for generating waveforms at specified frequency and duty cycle.

# 17447 “Quick Start” High Speed Counter (HSC)

Details the six 100kHz high-speed counters.

# 17501 “Quick Start” Selectable Timed Interrupt (STI)

Mechanism to solve time-critical control requirements.

# 18498 “Quick Start” Data Logging (DLG)

Captures and stores application data for later retrieval.

Appendix 26: Number Systems

Binary Numbers

Explains 16-bit binary numbers and their decimal values.

Hexadecimal Numbers

Explains hexadecimal numbers and their decimal equivalents.

Glossary

address

Identifies a memory location.

application

Machine or process monitored/controlled by a controller.

ASCII

Standard for defining codes for information exchange.

baud rate

Speed of communication between devices.

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