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There can be different approaches:
1. Use Modbus TCP devices that support more than one connections in parallel. You run 2 similar instances of Rapid SCADA, which receive the same data. Both the instances are active simultaneously.2. You can use the new module Rapid Gate which pass data from one Rapid SCADA instance to another in real time.
But when the primary server stops, you have to somehow switch device polling to Communicator on another server. For example, stop the 1st Communicator service and start the 2nd Communicator service. May be it is possible to do it automatically by some condition.The important thing is a scheme of connection with devices.
Hello,
KpModbus.dll is used for Modbus communicating without OPC server. This is preferable approach if a controller supports Modbus.
In case of using OPC, you should use KpOpc.dll. Don’t forget to install OPC Core Components (scroll the page to the bottom).Please clarify, what way of configuration do you choose. Screenshots will help.
It is possible by development a special module. It can by done by your side, or by my side as custom development. We can discuss it in details by email or by skype.
To find a cause, debug and log needed. The source code is not enough.
There is a new possibility recently developed: you can install Rapid SCADA on your RPi and pass data from RPi to PC using Rapid SCADA internal protocol. This functionality is implemented by Rapid Gate module. You can download it by this link. In case of follow up questions, be free to ask.
Send me a letter to receive a trial key for Rapid Gate.
Hello,
The communication log “says” that RPi drops the connection. Do you develop the Modbus server by yourself or use 3rd party software? Is there any logs of the Modbus server?
You need to open port on Windows Firewall, allow incoming connection on the router and redirect data to your PC using NAT (on router).
There is no SCADA specific, just network administration.
Read this section. Pay attention to Timeout and Delay parameters of communication.
Hello,
First of all, you need to find out the bottle neck step by step. Please provide more details what are “locally displayed value” and “value on SCADA screen”? Screenshots will help.Are you on Raspbian?
Yes.
You can try to install latest Mono manually as written here http://www.mono-project.com/docs/getting-started/install/linux/
I did it on Ubuntu just for testing.Also you can install this utility and try to establish a connection between internal and external computers.
