Good morning Eduardo,

Glad you got it worked out!

The redundacy firmware get's loaded into a pair of controllers when you have a redundant pair of them along with the 1756-RMx modules. See the below for more info:
– https://literature.rockwellautomation.com/idc/groups/literature/documents/um/1756-um535_-en-p.pdf

Sincerely,

Shawn Tierney,
Instructor at The Automation School