Allen-Bradley Compact GuardLogix 5370 User Manual page 58

Chapter 4 Configure the Controller
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This SNN defines the EtherNet/IP on which the controller resides as a safety
subnet. It can be viewed and modified via the General tab on the Controller
Properties dialog box.
For most applications, this automatic, time-based SNN is sufficient. However,
there are cases when you need to enter a specific SNN.
Figure 4 - Safety Network Number
Table 6 - Additional Resources
Resource
Chapter 9, Develop Safety Applications
Chapter 5, Communicate Over Networks
Rockwell Automation Publication 1769-UM022C-EN-P - June 2018
Description
Contains more information on the safety task, safety programs, and
safety routines.
Provides more information on managing the SNN.