Siemens SINAMICS G120 CU230P-2 HVAC Operating Instructions Manual page 162

Configuring the fieldbus
6.3 Communication over CANopen
Not all of the parameters can be directly addressed via this range. This is the reason that in
CAN, an inverter parameter always comprises two parameters from the inverter; these are
the offset specified using parameter p8630[2] and the parameter itself.
● for all parameters < 9999 the following applies:
● for all parameters 9999 < 19999 the following applies:
● for all parameters 19999 < 29999 the following applies:
● for all parameters 29999 < 39999, the following applies:
– p8630[2] = 3,
– (inverter parameters - 30000) -> hex + 2000 hex
Selection, index range
Further, no more than 255 indices can be transferred in a CANopen object. This means that
additional CANopen objects must be created for parameters that have more indices. This is
realized using p8630[1]. It is possible to transfer a maximum of 1024 indices.
● P8630[1] = 0: 0 ... 255
● P8630[1] = 1: 256 ... 511
● P8630[1] = 2: 512 ... 767
● P8630[1] = 3: 768 ... 1023
Accessing CANopen objects and inverter parameters
● p8630[0] = 0: only accessing CANopen objects (SDO, PDO, ... )
● p8630[0] = 1: Access to virtual CANopen objects (inverter parameters)
● p8630[0] = 2: not relevant for G120 inverters
160
– p8630[2] = 0,
– Inverter parameters -> hex + 2000 hex
Example: For parameter p0010, 200A hex follows as object number in the SDO job
– p8630[2] = 1,
– (inverter parameters - 10000) -> hex + 2000 hex
Example: For parameter p11000, 23E8 hex follows as object number in the SDO job
– p8630[2] = 2,
– (inverter parameters - 20000) -> hex + 2000 hex
Example: For parameter r20001, 2001 hex follows as object number in the SDO job
Example: For parameter p31020, 23FC hex follows as object number in the SDO job
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD