Rockwell Automation Publication 5094-UM001E-EN-P - April 2020 119
Configure and Replace Safety Modules Chapter 7
Set the SNN Manually
The SNN is used to provide integrity on the initial download to a FLEX 5000
I/O safety module.
If a safety signature exists, the FLEX 5000 I/O safety module must have
DeviceID that matches the module in the safety controller project, before it can
receive its configuration.
To maintain integrity, the module SNN must be set manually.
1. On the General category of the Module Properties dialog box, click the
ellipsis next to the Safety Network Number.
2. On the Safety Network Number dialog box, click Manual.
3. Type the SNN in the Number field and click OK.
4. On the Module Properties dialog box, click OK.
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