Configuring 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 55)
Fieldbus interfaces of the Control Units
The Control Units are available in different versions for communication with higher-level
controls with the subsequently listed fieldbus interfaces:
Fieldbus
PROFIBUS DP (Page 102)
USS (Page 123)
Modbus RTU (Page 137)
Data exchange via the fieldbus
Analog signals
The converter 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
Angle
Temperature
Acceleration
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 program
example for cyclic communication (Page 284).
Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2011, FW 4.4, A5E02299792B AB
Profile
PROFIdrive
PROFIsafe
-
-
4000 hex corresponds to the value of the following parameters
p2000
p2001
p2002
p2003
p2004
p2005
p2006
p2007
Control Unit Interface
CU240B-2 DP Sub D socket
CU240E-2 DP
CU240E-2 DP-F
CU240B-2 RS485 connector
CU240E-2
CU240E-2 F
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