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Rockwell Automation Publication 1715-UM001J-EN-P - December 2020
Chapter 8 Using SIL 2 Add-On Instructions with 1715 Redundant I/O Modules
Figure 72 - Requested_Output_Data in Ladder Logic Example
Figure 73 - Reconciled_Input_Data in Ladder Logic Example
Performing a SIL 2 Reset
SIL 2 communication between a Logix controller and 1715 modules is achieved
by the sender of the data encoding additional check data into the produced tag
and the receiver of that tag by using that extra data (and time) to determine the
data that is received is valid.
Data can travel in either direction, that is, CLX -> 1715 and 1715 -> CLX.
Each time the data passes the checks, it is deemed
valid
. If the checks fail for a
period > the CRTL value assigned to the module, a SIL 2 Reset is required.
A SIL 2 Reset acknowledges that there has been a fault within the data and that
new data, if valid, must once again be used.
The following diagram shows 1715 module output behavior.
Содержание Allen-Bradley 1715-AENTR
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Страница 114: ...114 Rockwell Automation Publication 1715 UM001J EN P December 2020 Chapter 2 Installation Instructions Notes ...
Страница 134: ...134 Rockwell Automation Publication 1715 UM001J EN P December 2020 Chapter 4 Digital I O Operation Notes ...
Страница 200: ...200 Rockwell Automation Publication 1715 UM001J EN P December 2020 Chapter 6 Configure the Redundant I O System Notes ...
Страница 244: ...244 Rockwell Automation Publication 1715 UM001J EN P December 2020 Chapter 9 Redundant I O System Diagnostics Notes ...
Страница 272: ...272 Rockwell Automation Publication 1715 UM001J EN P December 2020 Appendix C Reconfigure a Module Online Notes ...
Страница 290: ...290 Rockwell Automation Publication 1715 UM001J EN P December 2020 Appendix G History of Changes Notes ...
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Страница 297: ...Rockwell Automation Publication 1715 UM001J EN P December 2020 297 Redundant I O System User Manual ...