Automatic Assignment of Time-based Safety Network Number

When a new controller or device is created, a time-based SNN is automatically assigned.
  • Devices that are created directly under the controller port default to having the same SNN as that port on the controller.
  • For devices not directly under a controller port, subsequent new safety device additions to the same
    CIP Safety™
     network are assigned the same SNN defined within the lowest address on that
    CIP Safety™
     network.
The time-based format sets the SNN value as the date and time when the number was generated, according to the computer running the configuration software.
Time-based Format
This image shows where to configure an SNN to the time-based format.
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