How to use the KUNBUS Gateway modules
This page shows a few examples of how the KUNBUS Gateways can be used. These are the following:
Connect two PLC together with two KUNBUS Gateways and a Revolution Pi main Module
You can use two gateways with a Revolution Pi Core to connect two PLCs.
The advantage of this configuration is:
The Revolution Pi can analyze, process and edit the data before forwarding it - see https://kunbus-gmbh.atlassian.net/wiki/spaces/KS/pages/2379186179
The PLCs can have different protocols
The configuration is shown in the image below:
You can also do this with the Revolution Pi Connect +/S. For this, you can also use a CON module.
Use cases
Connectivity
Retrofit
IOT
HMI
Memory Structure
In contrast to the connection as shown in the link, the gateway buffers are handled differently. Here, the buffers are not mirrored by default. You can explicitly access both memory areas of the respective GW.
Simple example.
Connect Two PLC with different protocols.
You can use two KUNBUS gateways without a RevPi module to connect two devices (PLC) to support different industrial networks.
The configuration is shown in the image below:
Use cases
Connectivity
Convert Protocol A to B, or A to A (Both GW do not necessarily have to be different. They can both support the same protocol.)
Memory Structure
each gateway has its own memory. This may vary depending on the gateway. If two gateways are plugged together, the buffer on both sides is automatically configured to have the same size as the gateway with the smallest memory.
The memory on both Modular Gateway Modules is mirrored for each action so that it is not necessary to decide which GW to write to. This means that when a cell is written to, it will be done on both sides.
Control a Revolution Pi IO-Modules from an external device
You can read or write the inputs/outputs of a Revolution IO-Module via an external device. This can be done with the help of a KUNBUS Gateway module.
A Revolution Pi Core or Connect is also required for this.
The configuration is shown in the image below:
This can also be realized with a CON module.
Use cases
Remote I/O
IOT
Retrofit
Additional Information
On each PiBridge, we support a maximum of 5 devices. Only one GW can be used per PiBridge side, and the gateway must always be the last component.
No gateways or IO modules can be used on the ConBridge. There are special CON modules for this.
The Revolution Pi Core SE and Connect SE do not have GW functionality. This means that no KUNBUS GW can be connected there. For more information, see the following link.
There are not only physical gateways. We also support virtual gateways such as Modbus RTU and Modbus TCP. Only these two can be used as Slave or as Master.
In the following links you will find some application notes that will help you.
General information