Installing a backup system chapter 2 – Rockwell Automation 1775-MX_S4A,D17756.3.1 User Manual PLC-3 BACKUP CONC(OR.DU1 User Manual
Page 36
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Installing a Backup System
Chapter 2
2-21
Connecting an I/O Channel for Backup Communication
Any I/O channel can be used for backup communication. Figure 2.16
shows the connections when using I/O channel 1.
Figure 2.16
Connecting an I/O Channel for Backup Communication
Twinaxial Cable (cat. no. 1770-CD)
10394
Primary Processor
Backup Processor
Shield
Clear
Channel No. 1 Shown
Blue
Blue
Terminator
(cat. no. 1770-XT)
Channel No. 1 Shown
Clear
Shield
Terminator
(cat. no. 1770-XT)
(Refer to page 2Ć23)
(Refer to page 2Ć23)
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