Introduction

A CIP Safety CPU is the originator of CIP Safety communications, and is identified by its originator unique identifier (OUNID). Use this tab to configure an OUNID for the CIP Safety CPU. Each OUNID is a 10 byte concatenated 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. If this number is:

  • Auto-generated (the default), it is based on the current timestamp (date and time).

  • Manually generated, it can be any 6 byte hexadecimal character string.

You can update the OUNID by updating the auto-generated value, or changing the manual value.

IP Address

This is automatically set to the CPU Main IP address. The OUNID is updated if the IP address changes.

CIP Safety OUNID Parameters

This tab page presents the following parameters:

Parameter

Description

Safety Network Number

Click Advanced... to open the Safety Network Number dialog, where you can enter this setting:

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

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

Click OK to close the dialog and save the Safety Network Number.

IP Address

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

OUNID

The auto-generated hexadecimal identifier: a concatenation of the Safety Network Number and the IP Address.