Instruction Set Reference Manual
MicroLogix 1400 Programmable Controllers Bulletin 1766
Important User Information Solid-state equipment has operational characteristics characteristics differing from those of electromechanical equipment. Safety Guidelines for the Application, Installation Installation and Maintenance Maintenance of Solid So lid State Controls (publication SGI-1.1 SGI-1.1 available available from your local Rockwell Automation Automation sales office or online online at http://www.rockwellautomation.com/literature/ ) describes some important differences between solid-state equipment and hard-wired electromechanical devices. Because of this difference, and also because be cause of the wide variety of uses for solid-state equipment, equipment, all persons p ersons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable. In no event will Rockwell Automation, Automation, Inc. be responsible or l iable for indirect or consequential damages resulting from the use or application of this equipment. The examples and diagrams in this manual are included solely for illustrative purposes. purposes. Because of the many variables and requirements requirements associated with any particular installation, Rockwell Automation, Automation, Inc. cannot assume responsibility or liability for actual use based on the examples and diagrams. No patent liability is assumed by Rockwell Automation, Inc. Inc. with respect to use of information, information, circuits, equipment, or software described in this manual. Reproduction of the contents of this manual, in whole or in part, p art, without written permission of Rockwell Automation, Inc., is prohibited. Throughout this manual, manual, when necessary, necessar y, we use notes to make you aware of safety considerations. considerations. practi ces or circumstances that can cause an explosion in a hazardous WARNING: Identifies information about practices environment, which may lead to personal injury i njury or death, property damage, or economic loss. ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss. Attentions help you identify a hazard, avoid a hazard, and recognize the consequence SHOCK HAZARD: Labels may be on or inside the equipment, for example, a drive dri ve or motor, to alert people that dangerous voltage may be present. BURN HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that surfaces may reach dangerous temperatures. IMPORTAN
Identifies information that is critical for successful application and understanding of the product.
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Summary of Changes To help you locate new and an d updated information in this release of the manual, we have included change change bars as shown to the right of this paragraph. parag raph. The table below lists the sections that document new features and additional or updated information about existing features. Summary of Change Topic
Page
Support for Clear Controller Memory feature from FRN 15 onwards
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Firmware Revision History
Features Features are added to the controllers through through firmware upgrades. See the latest release notes, 1766-RN001 1766-RN001,, to be sure that your controller’s firmware is at the level you need. Firmware upgrades are not required, except to allow you access to the new features. See “Firmware “ Firmware Upgrades” Upgrades” below.
Firmware Upgrades
Enhanced features are added to the controllers through a firmware upgrade. This firmware firmware upgrade is not required, except to allow you access to the latest features and corrected anomalies. anomalies. You can only upgrade firmware within the same series of controller. To use the newest features, be sure your controller’s firmware is at the following level: Programmable Controller
Firmware Revision
Catalog Numbers
MicroLogi MicroLogix™ x™ 1400 1400 OS Series Series A FRN 6, Boot Boot Series Series 1766-L32AWA, 1766-L32AWA, 1766-L32BWA, 1766-L32BWA, 1766-L32BXB, A FRN 1 1766-L32AWAA, 1766-L32BWAA and 1766-L32BXBA controllers OS Series B FRN 10, Boot Series B FRN 3 OS Series B FRN 12, Boot Series B FRN 3
To upgrade the firmware for a MicroLogix controller visit the MicroLogix web site at http://www. http://www.ab.com/programm ab.com/programmablecontrol/plc/micr ablecontrol/plc/micrologix/ ologix/ downloads.html. In order to use all of the latest features available with OS Series A controllers, RSLogix™ RSLog ix™ 500/RSLogix Micro programming software must be version 8.10.00 or higher. For Series B controllers, this should be version 8.30.00 or higher.
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Summary of Changes
Notes:
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Rockwell Automation Publication 1766-RM001F-EN-P 1766-RM001F-EN-P - May 2014
Table of Contents Summary of Changes Firmware Revision History. History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii Firmware Upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Preface Who Should Use Use this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Purpose of this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Common Techniques Techniques Used Used in this Manual. Manual . . . . . . . . . . . . . . . . . . . . . . . . . Related Documentation Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rockwell Automation Automation Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
37 37 37 38 38
Chapter 1 I/O Configuration
Embedded I/O. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 MicroLogix 1400 Expansion Expansion I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Expansion I/O Modules Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Addressing Expansion I/O Slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 MicroLogix 1400 Expansion I/O Memory Mapping . . . . . . . . . . . . . . . . . . 3 Discrete I/O Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Analog I/O Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Specialty I/O Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 I/O Addressing Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Addressing Details. Details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 I/O Forcing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Input Forcing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Output Forcing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Input Filtering Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Analog Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Analog Input Filter Filter and Update times . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Input Channel Filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Converting Analog Analog Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Converting Analog Analog Input Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Analog Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Latching Inputs Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Rising Edge Behavior - Example Example 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Rising Edge Behavior - Example Example 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Falling Edge Behavior Behavior – Example Example 1. 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Falling Edge Behavior Behavior – Example Example 2. 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Configure Expansion I/O Using Using RSLogix 500/RSLogix 500/RSLogix Micro. . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Chapter 2 Controller Memory and File Types
Controller Memory Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 File Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 User Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
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