Rockwell Automation 1791DS-IBxxxx Guard I/O DeviceNet Safety Modules - Manual (Page 85)

Rockwell Automation Publication 1791DS-UM001J-EN-P - May 2013 85
Configure Modules in RSNetWorx for DeviceNet Software Chapter 6
Configuration Signature
The configuration signature is generated by the safety module each time the
configuration is changed. It consists of an ID of the module configuration and
the time and date the module configuration was created or changed. The
configuration signature provides SIL 3 integrity of the configuration of a Guard
I/O module.
The safety connection between a controller and I/O module is based on many
items, one of which can be the configuration signature of the safety I/O module.
If the configuration signature must match, the configuration signature must
remain the same once the safety connection is established or the connection will
be broken.
Figure 24 - Safety Connection and Configuration Signature
SmartGuard Safety Controller’s Safety Connection Tab
When configured as shown below, the I/O module configuration signature
must match the offline signature for a connection to be established.
Safety Module’s
Note that the configuration signature of the safety module
matches that of the SmartGuard controller, so the safety