User Manual Owner manual

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 31
Redundancy System Overview Chapter 1
System Performance
This section discusses connections and RPI settings for the 1715 Redundant I/O
System.
Connections
The adapter module has one required connection and does not support a rack
connection.
Each I/O module has one required connection (simplex or duplex).
For example, the system in Figure 11
has five I/O modules. Four are duplex and
one is simplex. They are all configured for data connection.
Figure 11 - Duplex and Simplex Connections
The example in Figure 11 shows six connections; one for each entry in the
configuration.
Table 4 - RSLogix 5000 or Logix Designer Configuration
The digital module connections use change-of state-triggers, and the adapter and
analog module connections use cyclic triggers.
Connection Module Duplex/Simplex Module Description
1 1715-AENTR Duplex Ethernet Adapter
1 1715-IB16D Duplex 16-point Digital Input
1 1715-OB8DE Duplex 8-point Diagnostic Digital Output
1 1715-IF16 Duplex 16-point Analog Input
1 1715-OF8I Duplex 8-point Analog Digital Input
1 1715-IF16 Simplex 16-point Analog Input