How to access data registers read by modbus tcp component

[viper_lasser]

How to access data registers read by modbus tcp component i.e for data trends or alarms ?

[Archie]

Not sure if this is what you are looking for, but here is how to read a value in code:

        Dim value As String
        value = ModbusTcpCom1.Read("40001")

[viper_lasser]

I mean that I would like to periodically read some data and log some alarms if they occured.

Can I periodically read same datas from modbus in independent thread and in the same time all controls are updated periodycally ?

[Archie]

You can perform reads on the same data or you can look at the value of the control. For example

1) Add a BasicLabel
2) Set the PLCAddressValue to 40001
3) Add a standard Button
4) Double Click the button to get back to code
5) type the code :  Button1.Text=BasicLabel1.Text
6) Run the app and click the button