RA EtherNet/IP Driver communication

To establish communication with a Logix controller, specify the

Route

property of the corresponding

Station

object in the following format

IP_Address

\Backplane\

Chassis_Slot_Number

.

The 1756-CMEE Embedded Edge Compute Module supports the following format

Backplane\

Chassis_Slot_Number

to access the controller tags directly from the backplane, without the EtherNet/IP connectivity.

To configure routing that involves multiple Logix controllers, use the following format

IP_Address

\Backplane\

Port

\

Address

\Backplane

Chassis_Slot_Number

. If needed, repeat the

Port

\

Address

part.

In the following example, the

OptixPanel™

reads tags from the Logix rack 2 CPU and the

Route

property of the

Station

object has the following value

192.168.1.10\Backplane\2\A\192.168.2.3\Backplane\0

.

Block reads allow a block of data to be read from the controller instead of reading individual tags or data points. This allows for more efficient reading of larger datasets such as arrays and data structures. To reduce network traffic and provide faster data transfer, Rockwell Automation recommends block reads for arrays and larger data structures such as UDTs. By default, block reads are disabled for the RA Ethernet/IP Station controller.

If the RA Ethernet/IP Station controller has a large structure or array to read, enable block reads. In

Project view

, select the

RA Ethernet/IP Station

controller, and then in

Properties

, set

Enable block reads

to

True

. This enables block reads on tag structures that support block reads.