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SLC 500 PLC 1747/1746 Legacy System Compatible Industrial Logic Controls
SLC 500 PLC 1747/1746 Legacy System Compatible Industrial Logic Controls
Specifications
Model Number :
SLC 500
Certification :
UL、CSA/C - UL、CE、C - Tick
Place of Origin :
USA
MOQ :
1
Price :
$20 - $2000
Payment Terms :
L/C,D/A,D/P,T/T,Western Union,MoneyGram
Delivery Time :
3-5workdays
Type :
Programmable Logic Controller
Warranty :
Original Manufacturer's Warranty
Pakage :
Original Pakage
Shipping Term :
International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/sea Freight / Air Freight / International Special Line
Freight Charge :
For Industrial Equipment (e.g., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quote
Description

SLC 500 PLC 1747/1746｜Legacy System Compatible｜Industrial Control

SLC 500 PLC System Overview
The SLC 500 is a classic medium-sized legacy PLC from Rockwell Automation, consisting of two subseries: 1747 (processor & communication modules) and 1746 (I/O chassis & input/output modules). Engineered for continuous production and discrete control applications in industrial environments, it features a compact footprint with robust expandability. The series seamlessly integrates with traditional production line sensors and actuators while supporting mainstream industrial communication protocols including DH-485 and EtherNet/IP. Perfectly tailored for upgrading, retrofitting, maintaining, and replacing aging factory systems, the SLC 500 has decades of proven application in automotive components, food & beverage packaging, material handling, and other sectors, renowned for exceptional stability and longevity.
Key Features & Capabilities
Robust Modular Design & Flexible Expansion
  • Modular architecture splits into 1747 (processors/communication) and 1746 (I/O chassis/modules) subseries for tailored configurations
  • Supports up to 7 expansion chassis and over 60 types of I/O modules (digital, analog, temperature, counting)
  • High-density options like 16AI/8AO modules for space-efficient monitoring
  • Scales from 256 I/O points (entry-level) to 4096 points for small-to-medium automation projects
Superior Reliability for Harsh Industrial Environments
  • Engineered to withstand vibration, electromagnetic interference, and extreme temperatures (0°C ~ 60°C)
  • Hardware redundancy options and comprehensive diagnostic functions
  • Front-panel LED indicators for quick fault identification
  • Proven track record of decades of stable operation across industries
Versatile Communication & Compatibility
  • Multiple built-in communication ports (DH-485, DH+, RS-232)
  • Supports protocols including EtherNet/IP, DeviceNet, and Modbus RTU
  • Seamlessly connects to legacy systems and new-generation Allen-Bradley PLCs
  • Reduces wiring costs with remote I/O compatibility for factory-wide integration
Powerful Performance & User-Friendly Operation
  • Processors with 1KB to 64KB program memory (up to 160KB max)
  • Efficient control core minimizes memory usage (50% less than competitors)
  • Supports Ladder Diagram, Function Block Diagram, and Structured Text programming via RSLogix 500
  • Fast scan times (as low as 0.9ms/k instructions) for high-speed control applications
Cost-Effective Legacy Solution
  • Balances performance and affordability for upgrading aging industrial systems
  • Continued access to official technical support, spare parts, and third-party services
  • Wide industry adoption validates practicality and versatility
Core Specifications
Specification Category Description
Processor Models (1747 Series) 1747-L511 (Compact), 1747-L524 (Medium), 1747-L551 (Large)
I/O Expansion Capability (1746 Series) Supports up to 7 expansion chassis; 16 I/O modules configurable per chassis
Program Memory Capacity Max 160KB user program memory
Communication Protocols DH-485, EtherNet/IP, DeviceNet, RS-232
Operating Temperature 0°C ~ 60°C
Protection Rating IP20 (Chassis)
Power Input 120/240V AC, 24V DC
Programming Languages Ladder Diagram (LD), Function Block Diagram (FBD), Structured Text (ST)
Product Model Listing
Processors (1747 Series)
Model Description
1747-L511 SLC 5/01 processor, entry-level model with basic control capability for small-scale discrete control tasks
1747-L524 SLC 5/02 processor, medium-performance model with moderate memory for mid-sized control applications
1747-L541 SLC 5/04 processor, 16K-word memory, supports DH+ and RS-232 communication
1747-L542 SLC 5/04 processor, 32K-word memory, suitable for complex sequential control with enhanced data storage
1747-L543 SLC 5/04 processor, 64K-word memory, ideal for large-scale control tasks requiring abundant program space
1747-L551 SLC 5/05 processor, 16K-word memory, supports Ethernet and RS-232 communication, enables networked control
1747-L552 SLC 5/05 processor, 32K-word memory, balances processing performance and network connectivity
1747-L553/B SLC 5/05 Controller (Series B), featured with stable Ethernet communication for industrial network integration
1747-L553/C SLC 5/05 Controller, optimized for data transmission in distributed control environments
1747-L553/D SLC 5/05 Controller, compatible with multiple industrial protocols for versatile system connection
Communication & Storage Modules (1747 Series)
Model Description
1747-SDN DeviceNet scanner module, enables connection and control of DeviceNet-based distributed I/O devices
1747-BSN Backup scanner module, provides redundant communication support for stable data transmission
1747-UIC USB to DH-485 interface converter, facilitates quick connection between PC and SLC 500 system
1747-PCIL/A PCI interface module, allows PCI-equipped computers to establish communication with SLC 500 system
1747-M1 1K EEPROM memory module for storing small-scale program data and system configurations
1747-M2 4K EEPROM memory module for program backup and parameter storage
1747-M11 32K flash memory module for reliable non-volatile storage of control programs
1747-M12 64K flash memory module for storing large-volume program files and historical data
1747-M13 64K flash EPROM memory module for high-stability storage of critical system programs
1747-PSD Program storage device for secure storage and quick retrieval of control programs
I/O Chassis (1746 Series)
Model Description
1746-A2 Fixed 2-slot I/O expansion chassis for small-scale I/O configuration with limited space
1746-A4 4-slot chassis, compact rack for basic I/O modules in small automation projects
1746-A7 7-slot I/O chassis, mainstream choice for medium-scale control systems
1746-A10 10-slot I/O chassis for large-scale I/O expansion in complex industrial control
1746-A13 13-slot I/O chassis for maximum I/O module expansion in high-density applications
Digital Input Modules (1746 Series)
Model Description
1746-IA4 4-point digital input module, 100/120V AC, for basic AC signal collection
1746-IA8 8-point digital input module, 100/120V AC, for small-batch AC input signal monitoring
1746-IA16 16-point digital input module, 100/120V AC, high-density input for AC-powered sensors
1746-IB8 8-point digital input module, 24V DC, for collecting signals from DC sensors
1746-IB16 16-point digital input module, 24V DC, common choice for high-density DC input
1746-IB32 32-point digital input module, 24V DC, for large-scale DC input scenarios
1746-IM4 4-point digital input module, 200/240V AC, for high-voltage AC signal collection
1746-IM8 8-point digital input module, 200/240V AC, for monitoring high-voltage AC equipment
1746-IM16 16-point digital input module, 200/240V AC, high-density high-voltage input
Digital Output Modules (1746 Series)
Model Description
1746-OA8 8-point digital output module, AC voltage, for controlling AC-powered actuators
1746-OA16 16-point digital output module, AC voltage, high-density control for multiple AC devices
1746-OB8 8-point digital output module, 24V DC, for driving small-power DC components
1746-OB16 16-point digital output module, 24V DC, mainstream module for batch DC equipment control
1746-OB16E Enhanced 16-point DC digital output module with improved stability
1746-OB32 32-point digital output module, 24V DC, for large-scale DC actuator control
1746-OW4 4-channel relay output module for controlling high-voltage equipment
1746-OW8 8-channel relay output module for medium-quantity high-voltage device control
1746-OW16 16-channel relay output module for centralized control of multiple high-voltage devices
1746-OVP16 16-channel high-current DC output module (sink type) for driving high-current DC loads
Analog Input Modules (1746 Series)
Model Description
1746-NI4 4-point analog input module for current/voltage signals and basic analog monitoring
1746-NI8 8-point analog input module for multiple analog signals like temperature and pressure
1746-NI16I 16-point analog input module (current type) for 4-20mA current signals from transmitters
1746-NI16V 16-point analog input module (voltage type) for 0-10V voltage signal acquisition
Analog Output Modules (1746 Series)
Model Description
1746-NO4I 4-point analog output module (current type) for 4-20mA signals to control actuators
1746-NO4V 4-point analog output module (voltage type) for 0-10V signals to analog-controlled equipment
1746-NO8I 8-point analog output module (current type) for large-scale current-based analog control
1746-NO8V 8-point analog output module (voltage type) for multiple voltage-controlled analog devices
Motion & Special Control Modules (1746 Series)
Model Description
1746-HSRV Servo control module, compatible with SLC 5/03, 5/04, 5/05 processors
1746-QS Synchronized axes control module for precise synchronization of multiple motion axes
1746-QV Open-loop velocity control module for velocity control of open-loop motion systems
1746-SC-CTR4 4-channel 50kHz counter/flow meter input module for flow measurement and high-speed counting
1746-SC-CTR8 8-channel 50kHz counter/flow meter input module for multi-channel high-speed counting
Power Modules (1746 Series)
Model Description
1746-P1 Rack-mount power supply, 120/240V AC input, 2A output for small-scale I/O chassis
1746-P2 Rack-mount power supply, 120/240V AC input, 5A output for medium-sized I/O configurations
1746-P3 Rack-mount power supply, 24V DC input, 3.6A output for DC-powered environments
1746-P4 Rack-mount power supply, 120/240V AC input, 10A output for large-scale I/O chassis
1746-P5 Rack-mount power supply, 125V DC input, 5A output for special DC power scenarios
1746-P7 Rack-mount power supply, 12/24V DC input, 2/3.6A output for low-voltage DC environments
Accessories (1746 Series)
Model Description
1746-R10 ~ 1746-R17 Replacement covers for dust and moisture protection
1746-RL35 ~ 1746-RL71 Specialized replacement parts for maintaining I/O module integrity
1746-RT25B Blue replacement terminal block for DC I/O modules
1746-RT25C Orange relay contact module terminal block for relay-type I/O modules
1746-RT25G Green terminal block for specialty I/O modules
1746-RT25R Red replacement terminal block for AC I/O modules
Application Scenarios
Industry Sector Application Scenarios
Automotive Components Manufacturing Stamping production line control, component assembly process automation, equipment interlock protection
Food & Beverage Packaging Filling equipment control, packaging line speed synchronization, finished product counting and sorting
Material Handling Conveyor start-stop control, lifting platform positioning, warehouse shelf material sorting
Water Treatment Pump station motor control, water quality parameter monitoring, sedimentation tank automatic sludge discharge
Machine Tool Processing CNC machine tool auxiliary process control, tool change automation, machining process monitoring
Frequently Asked Questions
Q1: As a legacy product, is technical support still available for the AB SLC 500?
Rockwell Automation and authorized distributors continue to provide original factory technical support, spare parts supply, and maintenance services for the SLC 500 series. Additionally, there is a wealth of third-party programming and debugging service resources in the market to meet the maintenance and upgrade needs of legacy systems.
Q2: How to match 1747 series processors with 1746 series I/O modules?
All 1747 series processors can directly connect to 1746 series I/O chassis, realizing data interaction via the backplane bus. During model selection, match the 1746 I/O chassis and modules with corresponding slots based on the processor's maximum I/O point limit and communication requirements. For example, the 1747-L524 processor can support up to 3 1746 expansion chassis.
Q3: Can the SLC 500 achieve data interaction with the latest generation of Allen-Bradley PLCs (e.g., ControlLogix)?
Yes. Through the EtherNet/IP communication module (e.g., 1747-ENET), the SLC 500 can establish Ethernet communication with ControlLogix series PLCs, realizing data sharing between legacy systems and new-generation systems, and facilitating phased upgrade and retrofitting of factories.
Q4: What is the programming software for the SLC 500? Is it compatible with the latest operating systems?
The official programming software is RSLogix 500, which supports mainstream operating systems such as Windows 7/10 (note the software version compatibility). In addition, the software can export program files for subsequent system backup and debugging.
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SLC 500 PLC 1747/1746 Legacy System Compatible Industrial Logic Controls

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Product Detail
Model Number :
SLC 500
Certification :
UL、CSA/C - UL、CE、C - Tick
Place of Origin :
USA
MOQ :
1
Price :
$20 - $2000
Payment Terms :
L/C,D/A,D/P,T/T,Western Union,MoneyGram
Contact Supplier
SLC 500 PLC 1747/1746 Legacy System Compatible Industrial Logic Controls

Shanghai Fradwell Industrial Automation Co., Ltd.

Verified Supplier
1 Years
shanghai, shanghai
Business Type :
Manufacturer, Exporter
Main Products :
PLC Programmable Logic Controllers, HMI Touch Screen, PCB Control Board
Certification Level :
Verified Supplier
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