OPC UA Server-Client queries

[rohit Kadam]

In one of our application we are using Beijer HMI with OPC UA Server- Client configuration. Some queries regarding same-
1.How many OPC UA servers can connect to single OPC UA Client?
2.Is there any limitations about tags or controllers setting for UA Server-Client Configuation?
3.How combobox list string data can pass in tags from OPC UA client to OPC UA Server HMI?


Regards,
Rohit

[mark.monroe]

Our iX Developer HMI OPC UA servers can handle 20 connections. Other OPC servers/clients may have a different maximum number.

Normally you would have each HMI act as an OPC server and you would then have a central PC that connects to them. That central PC can be used to transfer data between the OPC UA iX HMI's. The central PC would not be running iX Developer, so it would have a different maximum OPC client connection number.

All the OPC server does is allow you to share tags with OPC clients. Since the OPC client can change a tags value, you would not want to have the OPC and another controller try and control the same tag. Rather you would want to use the Data Exchange option if you want to transfer the data from a PLC to an OPC client through the HMI.

Values in a tag will be transferred to the OPC server. It doesn't matter if they are strings or not.

[rohit Kadam]

I am retrieving SQL Server table column data into one of combobox list in OPC UA Client PC. That multiple string column data of combobox need to transfer to another Beijer HMI using OPC UA Server-Client Configuration.
can we transfer that combobox string array data into tags?
How it is possible to transfer combobox string array data into another Beijer HMI using OPC UA Server-Client configuration?