Operating Instructions

Communication over CANopen
6.2 SDO services
Fieldbuses
176 Function Manual, 04/2018, FW V4.7 SP10, A5E34229197B AE
Calculate object number for an SDO job
The object number for the SDO job is calculated as follows:
object number hex = (number of the inverter parameter - offset value) hex + 2000 hex
Examples of object numbers
Parameter
Number of the inverter parameter - offset value
Object number
Decimal
Hexadecimal
● p0010:
10 dec
A hex
⇒ 200A hex
● p11000:
1000 dec
3E8 hex
⇒ 23E8 hex
● r20001:
1 dec
1 hex
⇒ 2001 hex
● p31020:
1020 dec
3FC hex
⇒ 23FC hex
Selection, index range
A CANopen object can contain a maximum of 255 indexes. For parameters with more than
255 indexes, you must create additional CANopen objects via p8630[1]. Overall, 1024
indexes are possible.
● p8630[1] = 0: 0 … 255
● p8630[1] = 1: 256 … 511
● p8630[1] = 2: 512 … 767
● p8630[1] = 3: 768 … 1023
Switch-on access to objects of the inverter parameters
Access to objects of the inverter parameters is activated via p8630[0], where:
● p8630[0] = 0: only access to CANopen objects
● p8630[0] = 1: access to virtual CANopen objects (inverter parameters)
● p8630[0] = 2: not relevant for G120 inverters
A selection of important manufacturer-specific objects is included in the EDS file.