The KUNBUS-COM communication interfaces offer you a simple and cost-saving option to integrate a fieldbus or an industrial Ethernet into your device without internal development effort. Those embedded modules are available for all major industrial networks.
In addition to the fieldbus or industrial Ethernet interface, the KUNBUS-COM modules also include a plug-in connector as an interface to your application. Changing the fieldbus version, for example from PROFINET to EtherNet/IP, is possible at any time by simply exchanging a corresponding COMS module.
Alongside the bus drivers, optocouplers, memory and the microcontroller, the KUNBUS-COM product family contains both the plug connector for the fieldbus/Ethernet connection as well as an ERNI SMC connector (32 pin) for the application or controller.
The module has a dual-port RAM interface. This allows the CPU of the module and the CPU of the control board simultaneous access to the shared memory. The KUNBUS-COM modules will be connected to your controller‘s processor via UART- or SPI-interface.
The shift register interface is used for devices without processors. Up to 32 byte output and input signals can be processed. The signals can be arbitrarily distributed across the input and output register (e.g. 5 x input and 27 x output).
A second serial interface allows the connection of a terminal and serves, for example, as a configuration and debug interface. As can be seen in the graphic, the interfaces to the controller and the fieldbus area are galvanically isolated from one another up to 1.5 kV. The KUNBUS-COM modules work completely independently from the controller and therefore do not burden its processor.
Further information about the KUNBUS-COM interfaces can be found on: