Specifications

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SLC 500 Programmable Controllers and I/O Modules
Universal Remote I/O connectivity for the SLC 500 is provided by the following interfaces:
1747-SN Remote I/O Scanner
The Remote I/O Scanner provides high-speed remote communication between an SLC processor and
Allen-Bradley operator interface and control devices. The scanner provides connectivity of your SLC
5/02 or higher processor to devices such as RediPANEL, DL40 Dataliner, PanelView, 1791 Block I/O,
Allen-Bradley drives, 1746 I/O, 1771 I/O, and Flex I/O devices.
The Series B scanner supports block transfer of up to 64 words of data.
Features
• Selectable baud rates — Provide noise immunity over various cable distances.
• RIO link cable length up to 3050m (10,000 ft.) — Allows for distribution of devices over
a wide physical area.
• Supports connection of up to 16 devices in normal mode, or up to 32 devices in complementary mode.
• Block transfers to RIO adapter devices — Sends large amounts of data to RIO devices without effecting total system throughput.
• Supports remote I/O passthrough — Allows you to download and change applications in PanelViews and Dataliners.
1747-BSN Backup Remote I/O Scanner
The 1747-BSN back-up scanner module allows for a redundant SLC-500 processors (SLC-5/02 or greater) system. The BSN allows
for the backup of remote I/O and network communications. This module is designed for critical applications where unexpected
shutdowns can be potentially hazardous and costly. This SLC module contains the full complement of both Remote I/O scanner
and back up communication features.
A pair of 1747-BSN modules and SLC-500 processors, primary and secondary, operate in a redundant (asynchronous data transfer)
configuration with Remote I/O. The primary processor controls the I/O, while the secondary processor receives the same remote
input data. The BSN modules communicate over a HSSL (High Speed Serial Link) to keep the secondary processor continuously
updated with your retentive data. In the event of a primary processor failure the secondary processor takes over control of the
system. The 1747-BSN module offers you virtually uninterrupted operation capability for your process.
1747-BSN Features
• Backup of one Remote I/O or DH+ network per complimentary BSN module pair.
• Backup of one RS232/485 communications per complimentary BSN module pair. This allows customer HMIs on
channel 0 to automatically transfer to the primary processor.
• Transfer of up to 2KW of customer retentive data per BSN.
• Repair primary system fault during secondary back-up system operation
• System hardware isolation guarantees primary system issues do not affect other systems
• Remote programming capability of secondary processor on DH+ (SLC-5/04 only)
• Minimal user program impact
• Back up system diagnostic information