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4.8.4 Client SDO (system bus master)
Each node on the system bus can be addressed via the SDO channels. In this way,
each node can be addressed and parameterized by one master via its client SDO1. All
the parameters of the data types uint/int/long are accessible. Strin
g
parameters can
not be processed. If a frequency inverter has been defined as a system bus master,
each node on the system bus in this frequency inverter can be addressed by means o
f
a field bus connection (RS232, RS485, Profibus-DP) via its client SDO1.
Attention!
T
he second SDO channel SDO2 of the frequency inverters is planned fo
r
the parameterization of the frequency inverters via a visualization tool on
the system bus.
The service used is SDO Segment Protocol Expedited according to CANopen. The fre-
quency inverter defined as a system bus master automatically
g
enerates the correct
telegrams. If the SDO channel is operated via a PLC/PC on the system bus, the tele-
grams must be generated according to the specification.
PLC
Field bus
Field bus
Inv.1 Inverter 2 Inverter 2
System bus
Client-SDO 1
Server-SDO 1
Server-SDO 1
Inverter 1
Visualizationtool
Server-SDO 2
Client-SDO 2
Server-SDO 2
Server-SDO 2
Inverter 2 Inverter 2
System bus
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