Specifications

Allen-Bradley ControlLogix Ethernet Driver Help

Note: The image below displays the fourth trial utilizing tag division for the driver.

Results

Server Project Layout

Driver Performance

(Reads/Second)

Improvement

Over Symbolic

Single Channel

Single Device with Logical Blocking

5972 768%

Single Channel

Single Device with Logical Non-Blocking

3705 476%

Single Channel

Single Device with Symbolic

777 N/A

Single Channel

Multiple Devices with Tag Division

6126 788%

Multiple Channels

Multiple Devices with Tag Division

6426 827%

Conclusions

The project began with a single channel and a single device, which is the default behavior for a single controller.

All tags were imported from this controller to this channel.device. All three protocol modes were then tested to

see which would provide the best performance. In this case, Logical Blocking Protocol was the best. The best

protocol depends on the application at hand. When performance is crucial, it is worth performing Logical