Overview
The Allen-Bradley 1747-SN Series B is a Remote I/O Scanner module designed for the SLC 500 PLC family. It is the remote I/O scanner for the SLC 500 that enables communication between an SLC processor (SLC 5/02 or later) and remotely located 1746 I/O chassis and other RIO compatible Allen-Bradley operator interface and control devices. Communication between devices occurs over twisted pair cable with the devices daisy-chained together. This module serves as the master device in a Remote I/O link topology, managing multiple slave adapter units for centralized control of distributed I/O.
Key Features
- Single RIO Port: Provides a dedicated three-pin interface for remote I/O communication using approved cabling.
- Long-Distance Capability: Supports cable runs up to 3048 meters for widespread device placement in industrial layouts.
- Multi-Baud Operation: Offers selectable data rates including 57.6 Kbaud and 230.4 Kbaud for adaptable network performance.
- Can connect up to 16 devices in the normal mode or 32 devices in the complementary mode.
- The scanner can reside in any slot of the local SLC chassis except for slot 0.
- LED indicators show normal communication and fault status updates.
Technical Specifications
- Communication Protocol: Allen-Bradley Remote I/O (RIO) Link
- Backplane Current Load: 600 milliamps at 5 Volts DC
- Maximum Thermal Dissipation: 4.5 Watts
- Compatible Cable: Belden 9463
- Maximum Distance: 3,048 meters (10,000 feet)
- Certifications: UL/C-UL Class I, Division 2, Groups A, B, C, D; CE and C-Tick marked
- Mounting: 1746 SLC Backplane (any slot except 0)
Typical Applications
- Distributed control systems requiring remote I/O monitoring and management
- High-speed communication between SLC processors, Human Machine Interfaces (HMI), PanelView displays, and other RIO-enabled devices
- Downloading and changing applications in PanelView series terminals and power monitors
- Industrial automation networks with multiple remote I/O adapters in daisy-chain topology
- Manufacturing facilities requiring extended-distance PLC I/O communication
Compatibility & Replacements
Compatible With
- SLC 5/02, 5/03, 5/04, 5/05 processors
- 1746 series I/O chassis
- Belden 9463 cabling
- RIO-compatible Allen-Bradley operator interface devices
- PanelView graphic terminals and power monitors
- 1746 Backplane communication architecture
Replaces / Drop-In Replacement For
- Earlier versions of the 1747-SN scanner module in SLC 500 systems
- Legacy remote I/O solutions requiring centralized RIO network control
Works With
- RSLogix 500 programming software for SLC 500 configuration
- Allen-Bradley Remote I/O (RIO) network protocol
- G-file configuration for RIO scanner setup
- Block transfer messaging for real-time data exchange
- DIP switch configuration for baud rate and node settings
