2
Functional Description
8/67 ekr 500 digital Unit Touch – CANopen User Gateway
No additional devices are required for the communication between
the web guiding controller and the customer control system.
During commissioning, only the following procedures must be
carried out:
■ Configuration of the integrated CAN bus interface (connector
socket X101) of the ekr 500 digital Unit Touch web guiding
controller as external CAN bus
■ Setting of the baud rate (default setting = 500kBit)
■ Selection of the communication protocol to be used
■ Loading of the provided EDS file into the customer control
system
2.2 CANopen Communication Profile
Communication of the ekr 500 digital Unit Touch web guiding con-
troller with the customer control system takes place via the CAN
bus based on the CANopen communication protocol that is stand-
ardized as the European Standard EN 50325-4.
This chapter describes the basic services and communication
objects of the CANopen DS301 communication profile, which are
used by the ekr 500 digital Unit Touch web guiding controller.
The description of the CANopen communication profile
assumes that the basic functioning of the DS301 commu-
nication profile is known and available as reference docu-
mentation.
2.2.1 Fundamentals
CANopen is an open CAN-based fieldbus standard enabling the
communication of devices of different manufacturers without any
special interface adjustments. The CANopen standard describes
the exchange of data in a CAN-based network. The DS301 com-
munication profile defines the type of data transmission, the dis-
tribution of the identifiers existing in the CAN bus system as well
as their use for the communication services required in a fieldbus
system.