Rockwell-automation 1769-ASCII Compact I/O ASCII Module Manual de usuario descargar pdf (Pagina 106)

106 Rockwell Automation Publication 1769-UM012B-EN-P - January 2014

Appendix E Using Electronic Keying

You can find revision information on the General tab of a module’s Properties

dialog box.

Figure 5 - General Tab

Exact Match

Exact Match keying requires all keying attributes, that is, Vendor, Product Type,

Product Code (catalog number), Major Revision, and Minor Revision, of the

physical module and the module created in the software to match precisely to

establish communication. If any attribute does not match precisely, I/O

communication is not permitted with the module or with modules connected

through it, as in the case of a communication module.

Use Exact Match keying when you need the system to verify that the module

revisions in use are exactly as specified in the project, such as for use in highly-

regulated industries. Exact Match keying is also necessary to enable Automatic

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.

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Rockwell-automation 1769-ASCII Compact I/O ASCII Module Manual de usuario Pagina 106