What Are Sdo Services - Siemens SINAMICS S120 Installation And Start-Up Manual

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1.12 What are SDO services?

1.12 What are SDO services?
Introduction
SDO services allow you to access the object directory for the connected drive unit. An SDO
connection is a peer-to-peer connection between an SDO client and a server.
The drive unit and its object directory is an SDO server.
The identifiers for the first SDO ch
For communication between:
• Receive: server <=
• Transmit: server => client, COB ID 580 hex + node ID applies
Properties
The SDOs have the
•
• The transfer proce
•
• Transfer of values with no more than 4 bytes (expedited transfer)
• Corresponds with the acyclic P
• All drive unit variables can be addressed via SDO
1-18
client, COB ID 600 hex + node ID applies
following properties:
Confirmed transfer of objects
dure is always asynchronous
Transfer of values greater than 4 bytes (no
annel of a drive unit are defined according to CANopen.
rmal transfer)
ROFIBUS parameter channel
Commissioning Manual, 12.2004 Edition, 6SL3097-2AA00-0BP1
CANopen interface