INVT Goodrive 35 Series Operation Manual page 297

inverters Appendix A
Goodrive35
3. Node address
In PROFIBUS/CANOPEN network, each device corresponds to a unique node address, you
can use the node address selection switch to define node address (switch isn't at 0) and the
parameter is only used to display the node address.
If node address selection switch is 0, this parameter can define node address. The user can
not adjust the parameter by themselves and the parameter is only used to display the node
address.
4. GSD file
In PROFIBUS/CANOPEN network, each PROFIBUS/CANOPEN subsidiary station needs
GSD file "device description document" which used to describe the characteristics of
PROFIBUS/CANOPEN-DP devices. GSD file contains all defined parameters, including
baud rate, information length, amount of input/output data, meaning of diagnostic data.
A CD-ROM will be offered in which contains GSD file (extension name is .gsd) for fieldbus
adapter. Users can copy GSD file to relevant subdirectory of configuration tools, please refer
to relevant system configuration software instructions to know specific operations and
PROFIBUS/CANOPEN system configuration.
A.2.8 PROFIBUS-DP communication
1. PROFIBUS-DP
PROFIBUS-DP is a distributed I/O system, which enables master machine to use a large
number of peripheral modules and field devices. Data transmission shows cycle: master
machine read input information from subsidiary machine then give feedback signal.
EC-TX-103 communication card supports PROFIBUS-DP protocol.
2. Service access point
PROFIBUS-DP has access to PROFIBUS data link layer (Layer 2) services through service
access point SAP. Every independent SAP has clearly defined function. Please refer to
relevant PROFIBUS user manual to know more about service access point information.
PROFIDRIVE-Variable speed drive adopts PROFIBUS model or EN50170 standards
(PROFIBUS protocol).
3. PROFIBUS -DP information frame data structures
PROFIBUS-DP bus mode allows rapid data exchange between master station and inverter.
Adopting master-slave mode dealing with inverter access, inverter is always subsidiary
station, and each has definite address. PROFIBUS periodic transmission messages use 16
words (16 bit) transmission, the structure shown in figure1.
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