Configuring The Fieldbus; Data Exchange Via The Fieldbus - Siemens SINAMICS G120 Operating Instructions Manual

Configuring the fieldbus

Before you connect the inverter to the field bus, you should have completed the basic
commissioning, see Chapter Commissioning (Page 47)
Fieldbus interfaces of the inverter
The inverter is available in different versions for communication with higher-level controls
with the subsequently listed fieldbus interfaces:
Fieldbus
PROFIBUS DP (Page 92)
USS (Page 110)
Modbus RTU (Page 123)
CANopen (Page 133)
7.1

Data exchange via the fieldbus

Data exchange via the fieldbus
Analog signals
The inverter always scales signals, which are transferred via the fieldbus, to a value of 4000
hex. The significance of this numerical value depends on the category of the signal that you
are transferring.
Signal category
Speeds, frequencies
Voltage
Current
Torque
Power
Temperature
Control and status words
Control and status words always comprise two bytes. Depending on the control type, the two
bytes are differently interpreted as higher or lower significance. An example for transferring
control and status words with a SIMATIC control is provided in Chapter STEP 7
programming examples (Page 296).
SINAMICS G120C Inverter
Operating Instructions, 01/2011, FW 4.4, A5E02999804A AB
Profile
PROFIdrive PROFIsafe
-
-
-
4000 hex corresponds to the value of the following parameters
p2000
p2001
p2002
p2003
p2004
p2006
Interface
SUB D connector (female)
RS485 connector
RS485 connector
SUB D connector (male)
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