Goodrive3000 series medium voltage VFD PROFIBUS communication
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card and VFD cannot be established.
3.
Node address
On the PROFIBUS network, each device corresponds to one unique node address. When the node
address selection switch is not set to 0, the switch is used to define node addresses, the node address
parameter is only used to display the node address, and you cannot modify the node address parameter.
When the node address selection switch is set to 0, the node address parameter can be used to define
the node address.
4.
GSD file
One device description file named GSD file is required for each PROFIBUS slave node on the
PROFIBUS fieldbus. The GSD file is used to describe the characteristics of the PROFIBUS-DP device.
The GSD file includes all parameters defined for the device, including the supported baud rate, supported
information length, input/output data quantity, and definitions of diagnosis data.
We provide a CD that contains the GSD file for the fieldbus adapter. You can copy the GSD file to the
corresponding subdirectory on the configuration tool software. For details about the operation and how to
configure the PROFIBUS system, see the instructions for the related system configuration software.
9.4 PROFIBUS-DP networking
PROFIBUS-DP is a distributed I/O system. It enables a master to use a large number of peripheral
modules and onsite devices. Data transmission is periodic: The master reads information from a slave
and transmits a feedback signal to the slave. EC-TX103 communication card supports the
PROFIBUS-DP protocol.
9.4.1 SAPs
The PROFIBUS-DP system uses the services at the data link layer (layer 2) through service access
points (SAPs). Functions of each SAP are clearly defined. For more information about SAPs, see the
related PROFIBUS master node user manuals, that is, PROFIdrive
––PROFIBUS models or EN50170
standard (PROFIBUS protocol) for variable-speed drives.
9.4.2 PROFIBUS-DP information frame data structure
The PROFIBUS-DP system allows fast data exchange between the master and VFD devices. For VFD
devices, data is always read and written in the master/slave mode. VFDs always function as slave nodes,
and one address is clearly defined for each slave node. The PROFIBUS system transmits 16-word
packets periodically. Figure 9.8 shows the structure of the packet.
PKW1
PKW2
PKW3
CW
SW
PZD2
PZD2
Fixed
zone
Free allocation zone
Parameter identification (PKW)
Process data (PZD)
...
PKW4
PZD3
PZD3
PZD12
PZD12
Figure 9.8 PROFIBUS-DP packet structure
PKW zone
PKW zone (parameter identification zone)
: The PKW zone describes the processing mode of the
parameter identification interface. A PKW interface is not a physical interface but a mechanism that
defines the transmission mode (such reading and writing a parameter value) of a parameter between two
communication ends.
