>Thanks for your response.
>
>What I am doing is similar to what you suggest except I do not need to poll the port since I only want data sent from the device in response to commands I send to it.
>
>I can type the following in the command window and get the correct data back from the device.
>

>ot = CREATEOBJECT('mscommlib.mscomm')
>ot.CommPort = 4
>ot.Settings='115200,n,8,1'
>ot.PortOpen = .T.
>lqout = 0hA0A20001B700B7B0B3
>ot.Output = lqout
>lqin = ot.Input
>ot.PortOpen = .F.
>CREATE CURSOR test (testrec Q(100))
>INSERT INTO test VALUES(lqin)
>

>
>But when I run the same code in a PRG, the contents of the input buffer are cleared before being assigned to the local varuable.
>
>Thanks in advance for any insight.

As they already told you, you have to wait for the response from your device, that means you have to get the data in the OnComm event.

Your code works in the Command Window because by the time you type "lqin = ot.Input" the device has already sent the response data, but in a prg the line "lqin = ot.Input" executes BEFORE the device has sent the data.

In the OnComm event:

#Define comEvReceive	2	&& Receive event.

*!* Return if we don't have a data event.
If This.oSerial.Object.CommEvent # comEvReceive
	Return
Endif

*!* Get your data here

Carlos Alloatti