1200H Object - Sdo Server; Sdos Operation - WEG CFW-11 Communications Manual

5.2.1 1200h Object – SDO Server
The CFW-11 has only one SDO of the server type, which makes it possible the access to its entire object dictionary.
Through it, an SDO client can configure the communication, the parameters and the inverter operation. Every SDO
server has an object, of the SDO_PARAMETER type (refer to section 4.2.2), for its configuration, having the
following structure:

5.2.2 SDOs Operation

A telegram sent by an SDO has an 8 byte size, with the following structure:
Identifier
Command
11 bits
byte 0
The identifier depends on the transmission direction (rx or tx) and on the address (or Node-ID) of the destination
server. For instance, a client that makes a request to a server which Node-ID is 1, must send a message with the
identifier 601h. The server will receive this message and answer with a telegram which COB-ID is equal to 581h.
The command code depends on the used function type. For the transmissions from a client to a server, the
following commands can be used:
Figure 5.1 - Communication between SDO client and server
Index
Name
Object
Type
Sub-index
Description
Access
Mappable
Range
Default value
Sub-index
Description
Access
Mappable
Range
Default value
Sub-index
Description
Access
Mappable
Range
Default value
Index
byte 1 byte 2
1200h
SDO Server Parameter
Record
SDO Parameter
0
Number of the last sub-index
ro
No
UNSIGNED8
2
1
COB-ID Client - Server (rx)
ro
No
UNSIGNED32
600h + Node-ID
2
COB-ID Server - Client (tx)
ro
No
UNSIGNED32
580h + Node-ID
8 data bytes
Sub-index Object data
byte 3 byte 4 byte 5 byte 6 byte 7