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Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
97
Configuring the fieldbus
6
Before you connect the inverter to the field bus, you should have completed the basic
commissioning, see Chapter Commissioning (Page 53)
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
Profile
Control Unit
Interface
(Page 98)
PROFIdrive
PROFIsafe
CU230P-2 DP
SUB D socket
-
CU230P-2 HVAC
RS485 connector
(Page 133)
-
CU230P-2 HVAC
RS485 connector
(Page 143)
-
CU230P-2 HVAC
RS485 connector
(Page 152)
-
CU230P-2 CAN
SUB-D connector
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
4000 hex corresponds to the value of the following parameters
Speeds, frequencies
p2000
Voltage
p2001
Current
p2002
Torque
p2003
Power
p2004
Angle
p2005
Temperature
p2006
Acceleration
p2007
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
Summary of Contents for SINAMICS G120 CU230P-2
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