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Bulletin 1747 SLC 500 Programmable Logic Controllers

SLC 500 Controllers

Bulletin 1747 SLC™ 500 controllers provide a range of choices in memory, I/O capacity, instruction set, and communication ports to let you tailor a control system to your exact application requirements. Our controllers have a strong reliability history covering hundreds of thousands of installations in a broad range of applications.

  • Overview
  • Software
  • Documentation
  • Resources
  • Applications


  • Advanced instruction set based on PLC-5® controllers
  • DH-485 port on SLC™ 5/01 controllers receive processor-to-processor communications and support programming
  • Communication ports on SLC 5/02 through SLC 5/05 controllers can initiate messages
  • SLC 5/02 through SLC 5/05 controllers support Universal Remote I/O or DeviceNet™ I/O, using a scanner module
  • SLC BASIC (1747-BAS) module adds BASIC or C programming capability


  • 1747 SLC 500 Controllers

SLC 500 Controller Comparison

Controller SeriesInstruction Memory WordsMax. I/O PointsI/O OptionsBuilt-in PortsAdditional Features
SLC 5/01 1 K or 4 K 960 Local I/O DH-485 (cannot initiate messages) Basic set of 51 instructions
SLC 5/02 4 K 4096 Local I/O, remote I/O DH-485 Expanded instruction set, faster scan times, extensive diagnostics for more complex applications
SLC 5/03 8 K, 16 K, or 32 K 4096 Local I/O, remote I/O

DH-485, RS-232-C (ASCII or DF1)

Connects to external intelligent devices using the RS-232 port, without additional modules
SLC 5/04 16 K, 32 K, or 64 K 4096 Local I/O, remote I/O

DH+, RS-232-C (ASCII or DF1)

High-speed peer-to-peer communications and direct connection to PLC-5 controllers
SLC 5/05 16 K, 32 K, or 64 K 4096 Local I/O, remote I/O Ethernet (10BASE-T 10/100 Mbps), RS-232-C (ASCII or DF1) Ethernet supports program upload and download, on-line editing, and peer-to-peer messaging


  • UL, C-UL, CE, C-Tick

Certifications apply when product is marked. See our Product Certification site for Declarations of Conformity, certificates and other certification details.

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Our Migration Solutions programs and services will help you leverage your investments in knowledge and equipment when you decide it is time to migrate.


Use RSLogix 500 programming software to program your SLC™ 500 system.

The controller and modules you select, along with your network configuration, determine which additional software packages you need to configure and program your system. Additional required software may include:

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Additional software products are available from Rockwell Software.


SLC 500 System Brochure1747-BR017
SLC 5/03, 5/04, 5/05 Processors Installation Instructions1747-IN009
SLC 500 Instruction Set Reference Manual1747-RM001
SLC 500 Modular Hardware Style User Manual1747-UM011
SLC 500 Fixed Hardware Style User Manual1747-UM009
More SLC 500 System publications in Literature LibraryAll Languages

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Product Certifications

See our Product Certification site for Declarations of Conformity, certificates and other certification details.

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Configuration & Selection Tools

Other Resources


The SLC™ 500 family provides cost-effective, reliable control in hundreds of thousands of applications around the world—everything from amusement park rides and micro-breweries to pharmaceutical and food processes. It is well-suited for applications where the size and overhead of a traditional, full-size PLC system is not justified.

SLC 500 controllers are ideal for OEM applications on the following types of machinery:

  • Packaging machinery
  • Conveyors and other material handling machinery
  • Machine tools
  • Textile machinery
  • Food products machinery
  • Pharmaceutical products machinery

Customer Success