26.8.11
UNIGATE Fieldbus Gateway CANopen® - ProfibusDP V. 2.3
11
Deutschmann Automation GmbH & Co. KG
Mode of operation of the system
4
Mode of operation of the system
4.1
General explanation
Communication can be split into seven layers, Layer 1 to Layer 7, in accordance with the
ISO/OSI Model.
The DEUTSCHMANN AUTOMATION gateways convert Layers 1 and 2 of the corresponding bus
systems. Layers 3 to 6 are blank, and Layer 7 is converted in accordance with the configured
mapping.
The Gateway can be configured through the software WINGATE
®
that is also supplied.
This Gateway module from the UNIGATE range of Deutschmann Automation allows a coupling
between
ProfibusDP
and
CANopen®
.
Here the Gateway on the CANopen® side acts as a standard-compliant master and on the Profi-
busDP side as a standard-compliant slave so that the problems that appear again and again (to
couple the CANopen® Slave participant to a Siemens PLC with ProfibusDP) are solved.
Like all UNIGATE modules this gateway is also developed for the practical industrial use. It has 9
LEDs available that allow the user an easy diagnosis.
Like the complete UNIGATE family, the gateway can be configured via the WINDOWS software
"WINGATE
®
" that is available free of charge. For a further description see chapter 4.3.
4.2
Interfaces
The gateway has a standard-compliant CANopen® interface and a Profibus-interface available
as well as an RS232 interface, where a PC can be connected for configuration.
4.3
Data exchange
The data exchange between the Profibus and the CANopen® will be fixed with the Mapping
which is configured via "WINGATE
®
".
Mapping means the illustration of data of one fieldbus to any other fieldbus. As data all data can
be used which are made available from the corresponding busses.
The Mapping works in both directions from the Master to the Slave as well as reverse.
Example:
That way it can be defined that the 2nd byte of the COB-ID201 (CANopen®-participant) is
transfered into the Profibus data as 7th byte.
At present 512 mappings are possible. However, the Profibus makes only a maximum of 244
bytes In and 244 bytes Out possible. All 488 bytes can be mapped via COB-IDs. The data are
transfered as PDOs only. From Gateway software-revision 2.2 on SDO accesses are also
supported (see chapter 4.3.7)
4.3.1
Configuration of the mapping
In order to create or work on such a mapping, please connect the UNIGATE with the PC via the
RS23-interface and there start the software "WINGATE®".
After the start of the software an upload from the connected device will be carried out automati-
cally. The corresponding matching parameters to this device are displayed. Please look for the
entry "Profile" in the table and click doubled onto the value "map ...". After a short period a dia-
logue is displayed. With it, it is possible to process all map entries (similar to the following pic-
ture):
