Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 29
Chapter 1 Redundancy System Overview
Figure 12 - Duplex and Simplex Connections
The example in Figure 12 shows six connections; one for each entry in the
configuration.
The digital module connections use change-of state-triggers, and the adapter
and analog module connections use cyclic triggers.
RPI
The RPI you set specifies the maximum amount of time between data updates.
The 1715 modules support an RPI range of 60…750 ms.
Connection and Data Format
The adapter and I/O modules each support one data connection for input/
output data. Listen Only connections are not supported.
Table 3 - RSLogix 5000® or Studio 5000 Logix Designer® Configuration
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
Cat. No. Minimum RPI Maximum RPI Default RPI
1715-AENTR
60 ms 750 ms
180 ms
1715-IB16D 60 ms
1715-OB8DE 60 ms
1715-IF16 120 ms
1715-OF8I 120 ms
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