Rockwell-automation 1769-ASCII Compact I/O ASCII Module Manuel d'utilisateur Page 111

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Rockwell Automation Publication 1769-UM012B-EN-P - January 2014 111
Using Electronic Keying Appendix E
EXAMPLE
In the following 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.
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