Connecting with transparent mode before Dlms read

By hhkx , 21 September, 2020

Forums

Hi,

I have a modem that needs to be start with transparent mode to connect by sending a special command then continue Dlms reading.

Is there an option in Gurux to set a command after settings.Media.Open(); before reader.InitializeConnection(); ?

Should below code do the job? And what is "receiver" in this case?

settings.Media.Open();
settings.media.Send("command-to-switch", receiver);
reader.InitializeConnection();

You can do it like this:
settings.Media.Open();
lock (settings.Media)
{
Gurux.Common.ReceiveParameters<byte[]> p = new Gurux.Common.ReceiveParameters<byte[]>()
{
WaitTime = 1000, //Wait time in ms.
Count = 2, //Min byte count expected to receive.
Eop = "\r\n" //End of the packet.
};
settings.media.Send("command-to-switch", null);
if (!settings.media.Receive(p))
{
throw new Error("Failed to receive reply");
}

BR,
Mikko

Hi Mikko,

settings.media.Receive(p) always returns false.

Is there any option that I can see Rx and Tx packages? Is TraceLevel.Verbose enough? I mean does Receive(p) method writes any log in communication?

I am sending the same package with Packet Sender and it returns the "ok" message. However, when I try above code, it throws the exception (that we write "Failed to receive reply")

btw: I am setting the eop as "ok"

Hi,

I believe that your device is sending something else than ok. If you are sending just ok and no data, change Count to 0.
You can get trace setting trace level to verbose and listen verbose events. Like this
settings.media.Trace = TraceLevel.Verbose;
settings.media.OnTrace += new TraceEventHandler(mediaOnTrace);

void mediaOnTrace(object sender, TraceEventArgs e)
{

}

BR,
Mikko

Hi Mikko,

Thank you for your support

Hi,

Are Count and Eop not for received data? Why should I set them according to sending data?

With packet sender;

Sending:

ABC5|8|N|1

Receiving:

ABC:ok

With gurux:

var p = new Gurux.Common.ReceiveParameters<byte[]>() {
WaitTime = 15000, //Wait time in ms.
Count = 2, //Min byte count expected to receive.
Eop = "ok" //End of the packet.
};

settings.Media.Send("ABC5|8|N|1", null);

and it throws the exception.