1747-BSN Backup Scanner Module Installation Instructions
■The 1747-BSN Backup Scanner Module provides a high-speed communication channel between two modular SLC 500™ (5/02 or higher) processors. The 1747-BSN backup system uses a set of modules, with one or more 1747-BSN modules residing in the primary system and one or more complementary modules in the secondary or backup system. The primary system controls the operation of remote I/O, while the secondary system monitors communications via the highspeed serial link (HSSL) and is available to take over control in the event of a fault in the primary system.
■The backup scanner has the capability to switch between two communication channels. The first channel is configurable as Remote I/O (RIO) or Data Highway Plus™ (DH+). The second channel is used to switch one RS232/485 channel in order to provide connection for electronic operator interfaces.
■A backup system using the 1747-BSN modules supports up to eight BSN modules in each processor chassis, connected by a local status link (LSL). Only I/O residing in remote chassis is backed up. Local I/O is not backed up.
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User's Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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September 1999 |
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1747-5.38;40071-040-01 (A) |
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479 KB |
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