Rockwell Automation 1756-XXXX ControlLogix Digital I/O Modules - Manual (Page 40)

40 Rockwell Automation Publication 1756-UM058G-EN-P - November 2012
Chapter 3 Common Module Features
Software Configurable
RSLogix 5000 software provides an interface to configure each module. All
module features are enabled or disabled through the I/O configuration within
the software.
You can also use the software to retrieve the following information from any
module in the system:
• Serial number
• Firmware revision information
• Product code
• Vendor
• Error and fault information
• Diagnostic counters
By eliminating tasks, such as setting hardware switches and jumpers, the software
makes module configuration easier and more reliable.
Electronic Keying
The electronic keying feature automatically compares the expected module, as
exists in the RSLogix 5000 I/O Configuration tree, to the physical module in the
chassis before I/O communication begins. You can use electronic keying to help
prevent communication to a module that does not match the type and revision
expected.
For each module in the I/O Configuration tree, the user-selected keying option
determines if and how an electronic keying check is performed. Typically, three
keying options are available:
• Exact Match
• Compatible Keying
• Disable Keying
You must carefully consider the benefits and implications of each keying option
when selecting between them. For some specific module types, fewer options are
available.