DOC-0017-07-EN: AC20 Series - EtherCAT Option 
  DOC-0017-07-EN-B 04.04.2023   15 (58) 
8  Configuration 
The option comms configuration is accessible through the keypad under the menu Option Comms, 
through DSE Lite function block Option Comms Config or through the webserver following the path Home 
> Engineer > Communications > Option Comms. 
The AC20 EtherCAT option requires configuration of both communication parameters and process data 
mapping. 
 
8.1  Communication parameters 
 
 
 
 
The network parameters of the slave must be set to establish communication with master. 
•  The parameter 0691 COMMS REQUIRED must be set to EtherCAT. 
•  The parameter 2566 MASTERMAPPING must be set to choose how process data mapping is 
defined. (See 8.2 Process Data for detail)