Rockwell-automation 1775-MX_S4A,D17756.3.1 User Manual PLC-3 BACKUP CO Manual de usuario descargar pdf (Pagina 24)

Installing a Backup System

Chapter 2

2-9

2. Set all backup switches on all other scanner modules, if any are

present, in both the primary and backup processors to the up position.

Figure 2.5

Location

of Backup Switches for 1775S4A and 1775SR Scanner

Modules

TopEdge

ofModule

18753

Figure 2.6

Setting Backup Switches on the 1775S4A and 1775SR Scanner

Modules

1234

Switch Positions:

UP =

Switch is away from board

DOWN=

Switch is toward board

Not Used

(always UP)

Not Used

(always UP)

Set per

Table 2.A

Set per

Table 2.A

OFF

10794I

Table 2.A

Backup

Switches on 1775S4A and 1775SR Scanner Modules

Switch

Switchover Method 2 4 Processor

Automatic switchover with controllable

switchback

DOWN UP both primary and backup

Automatic switchover with no switchback DOWN

primary

backup

Manual switchover UP DOWN both primary and backup

Standalone mode UP UP both primary and backup

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 118 119

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Rockwell-automation 1775-MX_S4A,D17756.3.1 User Manual PLC-3 BACKUP CO Manual de usuario Pagina 24

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