WEG CFW-09 - Profibus DP

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CHAPTER 8 - CFW-09 OPTIONS AND ACCESSORIES
8.12.2
Profibus DP
Introduction
The inverter that is fitted with the Profibus DP Kit operates in slave mode,
allowing the reading/writing of their parameters through a master. The inverter
does not start the communication with other nodes, it only answers to the
master controls. Atwisted pair of copper cable realizes the connection of the
Fieldbus (RS-485) allowing the data transmission at rates between 9.6 kbits/s
and 12 Mbits/s. Figure 8.39 show a general view of a Profibus DP network.
- Fieldbus Type: PROFIBUS DP EN 50170 (DIN 19245)
Physical Interface
-
Transmission means: Profibus bus bar line, type A or B as specified in
EN50170.
-
Topology: Master-Slave communication.
-
Insulation: the bus is supplied by DC/DC inverter and isolated galvanically
from remaining electronics and the signals A and B are isolated by means
of optocouplers.
-
It allows the connection/disconnection of only one node without affecting
the network.
Fieldbus connector of the inverter user
- Connector D-sub 9 pins - female.
- Pins:
Pin
1
2
3
4
5
6
7
8
9
Frame
Name
Not connected
Not connected
B-Line
Not connected
GND
+ 5 V
Not connected
A-Line
Not connected
Shield
Function
-
-
RxD/TxD positive, according to
specification RS-485
-
0 V isolated against RS-485 circuit
5 V isolated against RS-485 circuit
-
RxD/TxD negative, according to
specification RS-485
-
Connectedto the groundprotection (PE)
Table 8.15
- Pin connection (DB9) to the Profibus DP
Figure 8.39
- Profibus DP network
PROFIBUSDP
Master
PROFIBUS DP
slavenode#1
PROFIBUS DP
slavenode#2
PROFIBUS DP
slavenode#n
DP
RS-232
Personal
Computerwith
Configuration
Software