CPU as Originator

Use the Safety tab of the standalone M580 safety CPU to configure the CPU as a CIP Safety originator, by assigning it an Originator Unique Network Identifier (OUNID).

Each OUNID is a 10 byte concatenated hexadecimal value, consisting of a:

  • Safety Network Number (6 bytes)

  • IP Address (4 bytes)

NOTE: Changes to the OUNID can be made only offline. After the changed configuration is built, the application can be downloaded to the PAC.

Safety Network Number

The Safety Network Number component of the OUNID can be auto-generated by Control Expert, or user-generated by manual input. Create the SNN::

  • Automatically, by selecting Time-based , then clicking the Generate button. The auto-generated value appears in the Number field.

  • Manually, by selecting Manual , then inputting a 6 byte hexadecimal string in the Number field.

NOTE: The user should assign a unique SNN to each M580 CPU originator connected to the same safety network.

IP Address

This read-only setting is automatically input, based on the configured Main IP address CPU setting in the IPConfig tab.

OUNID

After the OUNID is created, it is used as a parameter in the Type 2 SafetyOpen Request, establishing a connection between the CPU as originator, and the CIP Safety device as target.