Configuring the fieldbus
7.2 Communication via PROFIBUS
Inverter with CU230P-2 Control Units
112 Operating Instructions, 11/2013, FW V4.6.6, A5E02430659B AG
Communication via PROFIBUS
7.2.1
What do you need for communication via PROFIBUS?
Check the communication settings using the following table. If you answer "Yes" to the
questions, you have correctly set the communication settings and can control the inverter via
the fieldbus.
Is the inverter correctly
connected to the PROFIBUS?
See Section: Connect the frequency
inverter to PROFIBUS (Page 112).
---
Have you configured the
communication between the
inverter and the higher-level
See Section: Configuring
communication to the control (Page 113
)
See also Section:
Configuring PROFIBUS
communication in
STEP 7 (Page 429).
Do th
e addresses in the inverter
and the higher-level controller
See Section: Setting the address
(Page 114).
Is the same telegram set in the
higher-
level controller and in the
inverter?
Adapt the telegram in the inverter. See
Section: Select telegram (Page 115).
Are the signals that the inverter
and the controller exchange via
PROFIBUS correctly
interconnected?
Adapt the interconnection of the signals
in the controller to the inverter. For the
PROFIdrive-compliant interconnection in
the inverter, see also Section:
PROFIdrive profile for PROFIBUS and
PROFINET (Page 116).
See also Section:
STEP 7 program
examples (Page 438).
Connect the frequency inverter to PROFIBUS
Permissible cable lengths, routing and shielding the PROFIBUS cable
For a data transfer rate of 1 Mbit/s, the maximum permissible cable length is 100 m.
You will find additional information on this topic in the Internet:
● Product support
(http://www.automation.siemens.com/net/html_76/support/printkatalog.htm
)
● PROFIBUS user organization installation guidelines
(http://www.profibus.com/downloads/installation-guide/
)
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