Overview
The Allen-Bradley 1747-SCNR is a ControlNet Scanner Module designed for integration within SLC 500</strong chassis systems. The Allen-Bradley 1747-SCNR SLC ControlNet Scanner Module acts as an interface between the ControlNet device and the SLC processor. Installs in an SLC 500 chassis and connects up to three chassis with 30 I/O modules to a single controller or communication adapter. This module facilitates deterministic, real-time data exchange across ControlNet networks in distributed automation environments.
Key Features
- Provides capability to connect to ControlNet network via two (2) ControlNet ports
- Supports non-redundant and redundant media
- Includes optical coupling and filter circuitry which provides signal noise reduction
- Can communicate with the processor in the form of M1/M0 File Transfers and Discrete I/O (DIO)
- Comes with LED status indicators such as CHA and CHB LED and an OK LED
- Capable of supporting up to 99 nodes on a ControlNet network
Technical Specifications
- Backplane Communication: 1746 Backplane Communication
- Maximum Backplane Current: 900 mA at 5V DC
- ControlNet Ports: 2 (Channel A and Channel B)
- Operating Temperature: 0-60 Deg. Celsius (32-140 deg. Fahrenheit)
- Storage Temperature: -40-85 deg. Celsius (-40-185 deg. Fahrenheit)
- Relative Humidity: 5-95% without condensation
- Operating Shock: 30 g | Non-Operating Shock: 50 g
- Certifications: cUL Marked, UL Marked, C-Tick, CE Marked
- ControlNet Address Range: 01-99 (default 00—not a valid address, requires modification)
Typical Applications
- Distributed manufacturing control systems requiring ControlNet-based I/O scanning
- Process automation environments (oil & gas, automotive, food & beverage processing)
- Legacy SLC 500 system upgrades with enhanced network connectivity
- Real-time data exchange between SLC processors and remote I/O modules on ControlNet networks
- High-availability systems using redundant ControlNet media configurations
Compatibility & Replacements
Compatible With
- SLC 500 processors: SLC 5/02, 5/03, 5/04, 5/05
- ControlNet networks (linear and redundant configurations)
- ControlNet taps: 1786-TPR, 1786-TPS, 1786-TPYR, 1786-TPYS
- ControlNet trunkline cabling: 1786-RG6 (RG-6 Duad Shield)
- RSLogix 500 programming software (SLC 500 projects)
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 1747-SCNR-A, 1747-SCNR-B, and 1747-SCNR-C are variant series numbers that may apply depending on firmware or revision levels.
Works With
- RSLogix 500 (SLC 500 programming and configuration)
- ControlNet communication protocol (ODVA-compliant)
- M1/M0 File Transfer and Discrete I/O (DIO) data exchange modes
- 1746 SLC 500 backplane architecture
