The 1747-BSN module contains the full complement of RIO scanner features, plus backup capability for support of redundant processor applications. The backup system consists of one or more pairs of complementary modules, with one module residing in the primary system and the other in the backup system. The primary system controls the operation of remote I/O, while the backup system monitors communications via the high-speed serial link (HSSL) and is available to take control in the event of a fault in the primary system.
Remote I/O Scanner Module
The 1747-SN module 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 InView Message displays, Power Monitor 3000, PanelView, 1791 Block I/O, Allen-Bradley Drives, 1746 I/O, 1771 I/O, and Flex I/O devices. Note: The series B scanner supports block transfer of up to 64 words of data. The 1747-SN features: noise immunity over various cable distances via selectable baud rates. distribution of devices over a wide physical area, supporting RIO cable lengths up to 3050 m (10,000 ft). connection of up to 16 devices in normal mode or 32 devices in complementary mode. capability to send large amounts of data to RIO devices without affecting system throughput, utilizing block transfers. capability to download and change applications in PanelView terminals and Power monitors via remote I/O passthru.
The 1747-BSN features
backup of one Remote I/O or DH+ network per complementary BSN module pair. backup of one RS-232/DH-485 communications per complentary BSN module pair, allowing HMIs on channel 0 to automatically transfer to the primary processor. transfer of up to 2 K words of retentive data per BSN. repair of primary system fault during secondary backup system operation. remote programming capability of secondary processor on DH+ (SLC 5/04 only). minimal user program impact. backup system diagnostic information
after-sale service
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1 year professional warranty service
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