| 摘要 |
The invention relates to a method for transmitting data between a first automation appliance, such as a user PC or a central controller, and at least one second automation appliance, such as a field device, via a CANopen bus using a service data object as an SDO service, wherein an SDO client implemented in the first automation appliance is used to send a download or upload request to an SDO server implemented in the at least one second automation appliance, wherein the data are encapsulated in a CANopen frame by an application implemented in the first automation appliance or the at least one second automation appliance wherein the CANopen frame with the encapsulated data is transmitted or sent by means of an SDO service into or out of a data tunnel object defined in an object directory of the SDO server, and wherein the encapsulated data are decapsulated by the application implemented in the first or the at least one second automation appliance. In order to simplify the configuration and/or parameterization of automation appliances with a MODBUS server using a CANopen bus, provision is made for the method to be used to configure and/or parameterize the second automation appliance having at least one MODBUS server using the CANopen bus, for the data to be produced as configuration and/or parameterization data in the form of a MODBUS frame and to be encapsulated in the CANopen frame, and for the CANopen frame to be loaded into the data tunnel object of the SDO server of the at least one second automation appliance by means of an SDO download and decapsulated. |
