Rockwell Automation 1756-L7x GuardLogix 5570 Controllers - Manual (Page 91)

Rockwell Automation Publication 1756-UM022A-EN-P - November 2012 91
Develop Safety Applications Chapter 6
4. Click Connection to open the Consumed Tag Connection dialog box.
5. Select the controller that produces the data.
6. Enter the name of the produced tag.
7. Click the Safety tab.
8. Enter the requested packet interval (RPI) for the connection in 1 ms
increments.
The default is 20 ms.
The RPI specifies the period at which data updates over a connection. The
RPI of the consumed safety tag must match the safety task period of the
producing safety project.
The Connection Reaction Time Limit is the maximum age of safety
packets on the associated connection. For simple timing constraints, an
acceptable Connection Reaction Time Limit can be achieved by adjusting
the RPI.
The Max Network Delay is the maximum observed transport delay from
the time the data was produced until the time the data was received. When
online, you can reset the Max Network Delay by clicking Reset Max.
Consumer’s Project Producer’s Project