TCP/IP Warning - Unable to Read Any Data
These remedies apply to the case when you receive no data and you get this warning message:
'tcpip' unable to read any data
When using the TCP/IP interface for:
Reading ASCII (text) data using the
fscanf
,fgets
, orfgetl
functionsReading binary data using the
fread
functionReading binblock data using the
binblockread
function
these are possible causes and remedies:
Cause | Solution |
---|---|
An invalid command was sent to the device, so there is a problem reading the response to the command. | Check your device manual for proper command formatting. |
An incorrect write terminator was sent to the instrument before attempting to read data, so there is no data to read. | Verify that the Terminator property is set to the
value required by your device. |
Your device did not receive the command because the remote host address or the remote port is incorrect. | Verify that the device is at the remote host address that you
specified, and is listening on the remote port that you specified when
you created the tcpip object. |