Rockwell Automation Publication 1734-UM013N-EN-P - September 2017 155
Replacing POINT Guard I/O Modules Chapter 8
If the project is configured as ‘Configure Only When No Safety Signature Exists’,
follow the appropriate instructions in Table 1 3
to replace a POINT Guard I/O
module that is based on your scenario. Once you have completed the steps in the
scenario correctly, the DeviceID matches the original. This match enables the
safety controller to download the proper module configuration, and re-establish
the safety connection.
Scenario 1 - Replacement Module Is Out-of-box and Safety Signature Exists
1. Remove the old I/O module and install the new module.
2. Right-click the replacement POINT Guard I/O module and choose
Properties.
3. To open the Safety Network Number dialog box, click to the right of
the safety network number.
Table 13 - Replacing a Module
GuardLogix Safety
Signature Exists
Replacement
Module Condition
Action Required
No No SNN
(Out-of-box)
None. The module is ready for use.
Yes or No Same SNN as original
safety task
configuration
None. The module is ready for use.
Yes No SNN
(Out-of-box)
See Scenario 1 - Replacement Module Is Out-of-box and Safety
Signature Exists on page155.
Yes
Different SNN from
original safety task
configuration
See Scenario 2 - Replacement Module SNN Is Different from Original
and Safety Signature Exists on page 156.
No See Scenario 3 - Replacement Module SNN Is Different from Original
and No Safety Signature Exists on page 158.
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