Rockwell Automation 1788-EN2PAR EtherNet/IP and ControlNet to PROFIBUS PA Linking Device User Manual - Manual (Page 27)

Rockwell Automation Publication 1788-UM058B-EN-P - September 2014 27
Chapter
2
Set Up in the Studio 5000
Logix Designer Application
Add the 1788-EN2PAR
Linking Device to the I/O Tree The 1788-EN2PAR linking device must be added to the I/O tree of the Logix
controller. The linking device must be added to an Ethernet bridge module, such
as an Allen-Bradley 1756-EN2T or 1756-EN2TR module.
Follow these steps to add the linking device to the I/O tree of the Logix
controller. This example uses the 1756-EN2T module.
1. Right-click the Ethernet bridge and choose New Module.
2. Select the linking device that you want to add to the Ethernet bridge.
3. Click the General tab and set the name, description, and IP address.
4. Set the requested packet interval (RPI) for the linking device.
The linking device RPI defaults to 300 ms. You can change the RPI if
needed, depending on field device count and required update times.
5. Click OK to add the linking device to the I/O tree.
IMPORTANT The RPI determines the amount of Class 1 data requests sent for the field
devices that are configured on the PA bus. If many field devices are
configured on the bus and RPI is set too low, class 1 data (PVs and
status) do not update each cycle, and class 2 data responses are slowed.
See Class 2 MPPF on page 31 in the master configuration.