Manual Allen Bradley

SLC™ 500 Instruction Set
Catalog Numbers 1747-L20x, 1747-L30x, 1747-L40x, 1747-L511, 1747-L514, 1747-L524, 1747-L531, 1747-L532, 1747-L541, 1747-L542, 1747-L543, 1747-L551, 1747-L552, 1747-L553

Reference Manual

Important User Information

Solid state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines for the Application,Installation and Maintenance of Solid State Controls (Publication SGI-1.1 available from your local Rockwell Automation sales office or online at http://www.ab.com/manuals/gi) describes some important differences between solid state equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide variety of uses for solid state equipment, all personsresponsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable. In no event will Rockwell Automation, Inc. be responsible or liable 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. Because of the manyvariables and requirements associated with any particular installation, Rockwell 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. with respect to use of information, circuits, equipment, or software described in this manual. Reproduction of the contents of this manual, in whole or inpart, without written permission of Rockwell Automation, Inc. is prohibited. Throughout this manual we use notes to make you aware of safety considerations. Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to personal injury or death, property damage, or economic loss.

WARNING

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ATTENTION

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IMPORTANT
SHOCKHAZARD

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 • recognize the consequence Identifies information that is critical for successful application and understanding of the product. Labels may be located on or inside the drive to alert people thatdangerous voltage may be present.

Summary of Changes
The information below summarizes the changes to this manual since the last printing. To help you find new and updated information in this release of the manual, we have included change bars as shown next to this paragraph. The table below lists the sections that document new features and additional or updated information about existing features.For this information Added DII subroutine to list of subroutines that can be nested. Changed "user error handler" to "user fault routine". Changed "offline and unattended" to "offline and unmatched". Clarified "source" as physical input and "destination" as input image table. Removed DII subroutine from second paragraph. Added "DF1 Radio Modem" to list of processors. Added statement regardingthe type of instruction where you cannot place a REF instruction. Clarified that system configuration for channel 0 must be set to user mode. Added in ASCII string character tip. Added that the Found Bit indicates that the instruction found the end of line in the buffer. Added in proper XIC symbol in application examples. Added in information pertaining to using the ACL instruction with OS series C,FRN 7 and higher. Revised the timing diagram for the ARD, ARL, AWA, and AWT instructions. Added in DF1 Radio Modem to list of processors. Revised Message Serving Selection bit to include its use with SLC™ 5/03 and higher processors. Revised MSG instruction configuration options to include the SLC 5/05 "other Ethernet®/IP device". Made the distinction for the number of elements between multihop...