→EC-Engineer

EC-Engineer is a product of acontis technologies GmbH.
according to http://www.acontis.com/eng/products/ethercat/ec-engineer/index.php: The EC-Engineer is a powerful software tool used for configuration and diagnosis of EtherCAT® networks. Using this single tool one can handle all required engineering and diagnosis tasks in a quick and comfortable way. ...

If you want to access the hardware IOs of →EtherCAT fieldbuses, see "Accessing hardware IOs via EC-Master and EC-Engineer of Acontis".