Rockwell Automation 1747-BSN Backup Scanner Module - Manual (Page 7)

Backup Scanner Module 7
Publication 1747-5.38
The 1747-BSN module provides backup functionality for the following:
• DH+ or RIO on a single pair of modules - Both may be backed up when two
or more pairs of modules are used.
• RS232 - Any RS232 device communicating with channel 0 of the SLC
controller may be backed up provided hardware-handshake lines are not
required. These ports only allow switchover of the transmit, receive and
ground wires for RS232.
Features
Figure 3 Hardware Features
PRI
ERR
FLT
SEC
RIO
HSSL
BACKUP SCANNER
Local Status
Link (LSL)
Status LEDs
High Speed Serial
Link (HSSL)