AdvancedHMI Software

General Category => Support Questions => Topic started by: qwideman on September 27, 2013, 04:38:12 PM

Title: Modbus TCP Comm -Transactions(e.TransactionNumber And 255) out of bounds
Post by: qwideman on September 27, 2013, 04:38:12 PM

I am getting an error at:
Transactions(e.TransactionNumber And 255) "Index was outside the bounds of the array."

Code: [Select]

   If Transactions(e.TransactionNumber And 255) IsNot Nothing Then
            Transactions(e.TransactionNumber).ErrorReturned = True
        Else
            MsgBox(e.ErrorMessage)
        End If
in ModbusTcpipComm.vb

What does this mean? This is on a form with 1 ModbusTcpipComm object, 2 DataSubscribers, 12 AdvancedHMI Controls and a picturebox.

EDIT: Each pipe has a property set to "PLC" which is what I named the "ModbusTcpComm1"...  There are a lot of pipes, but less than 50. Are these interfering? I can't change the CommComponent for a pipe without it reverting automatically...

Any help would be much appreciated.

Quinton Wideman

Title: Re: Modbus TCP Comm -Transactions(e.TransactionNumber And 255) out of bounds
Post by: Archie on September 27, 2013, 05:08:47 PM

Change the code to this:

Code: [Select]

        If Transactions(e.TransactionNumber And 255) IsNot Nothing Then
            Transactions(e.TransactionNumber And 255).ErrorReturned = True
        Else
            MsgBox(e.ErrorMessage)
        End If


Title: Re: Modbus TCP Comm -Transactions(e.TransactionNumber And 255) out of bounds
Post by: qwideman on September 27, 2013, 05:12:15 PM

BINGO!

Thanks Archie!