How can I feedback the RS-232 response to TouchPanel?

I suggest that you look in the code that I sent you yesterday.

You can monitor the response strings from a device using Netlinx Studio. Enable diagnostics and enable notifications. While these are turned on you'll be able to see strings being returned (except if the device returns a $00, then the rest of the string after the 'null' won't show).

Also, a useful tool is to use commands like SEND_STRING 0, " (*stuff to send to screen here*) ". Outputs from this command will show up in the diagnostics tab. I use it a lot when parsing response strings to make sure I'm getting the expected result.

EXAMPLES:

SEND_STRING 0,"'Command Received O.K.;'"
SEND_STRING 0,"'sRESPONSE_QEUE = ',sRESPONSE"
SEND_STRING 0,"'SPACKETTYPE =',sPACKET_TYPE"

DEFINE_EVENT
DATA_EVENT [dvDEVICE]//RESPONSE STRINGS RECEIVED FROM DEVICE
  {
   STRING:
	 {
		stack_var char cur_cmd[18]
		sRESPONSE_QEUE="sRESPONSE_QEUE,data.text"
		send_string 0,"'From data event in module for dvDEVICE: sRESPONSE QEUE =', sRESPONSE_QEUE,'  DATA.TEXT = ', data.text"
	 }
  }

--John

Or use ^TXT

Or you can use the ^TXT command (G4 command)

SEND_COMMAND dvTP, "'^TXT-1,0,RESPONSE STRING = ',sRESPONSE_STRING"

--John

something like:

button_event[dvTP,nSelectInputx]
{
  push:
  {
    IF(!nPwrStat)
    {
      send_command dvDevice,"'turn it on',13" //if it's not on, turn it on
      nPwrStat = 1 //you can control this parameter with queries and responses if the device supports it
      nWarmed = 0
      wait 300  // wait until the device is ready to handle an input change -- maybe 30 sec for a projector
        {
          nWarmed = 1
        }
    }
    wait_until nWarmed
    {
      send_command dvDevice,"'Select Desired Input',13"
    }
  }
}

I've not tested the above, but it should give you the idea.