DOC-0017-07-EN: AC20 Series - EtherCAT Option 
  DOC-0017-07-EN-B 04.04.2023   57 (58) 
 
Manufacturer Specific Objects 
The exact representation of a parameter depends on its number of elements. In the following example, 
Parameter no. 0002h and 0004h only contain one element each, causing them to be represented as simple 
variables rather than arrays. The other parameters have more than 1 element (of the same data type), 
causing them to be represented as arrays. If a parameter has more than 1 element of different data types, it 
will be represented as a record. 
The offset between the Parameter no. and the object index is always 2000h. 
 
0001h 
0003h 
3FFFh