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AN-X-MOD (Master)
November 2011
9.
Upload the alias files from each AN-X and save them. Import them
into RSLogix 5000. There will be some errors from duplicates.
10.
Create the ControlLogix application
11.
Add connections to both AN-X modules.
12.
Add logic to detect the active AN-X and to detect the switch from
primary to backup (see sample).
13.
On each scan, copy the inputs from the active AN-X to an internal
array.
14.
On each scan, copy an output array to the outputs on the active
AN-X.
15.
Write the control program in terms of the internal arrays
Sample Application
The following ladder logic shows a sample application that implements
redundancy.
It first checks that connections to both AN-X modules are good.
