Rockwell Automation 1756-IF4FXOF2F ControlLogix High-speed Analog I/O Module - Manual (Page 31)

Rockwell Automation Publication 1756-UM005B-EN-P - January 2013 31
Module Features Chapter 3
EXAMPLE In this scenario, Disable Keying allows I/O communication.
The module configuration is for a 1756-IA16 digital input module. The physical
module is a 1756-IB16 digital input module. In this case, communication is
allowed because the two digital modules share common data formats.
IMPORTANT Changing electronic keying selections online may cause the I/O
communication connection to the module to be disrupted and may result in a
loss of data.
Module Configuration
Vendor = Allen-Bradley
Product Type = Digital Input Module
Catalog Number = 1756-IA16
Major Revision = 2
Minor Revision = 1
Physical Module
Vendor = Allen-Bradley
Product Type = Digital Input Module
Catalog Number = 1756-IB16
Major Revision = 3
Minor Revision = 2
Communication is allowed.