MTS Series LX Laser Extensometer - Manual (Page 45)

Using the Serial Interface
LX Laser Extensometer Operation 45
Using the Serial Interface
This feature allows information to be read from and written to the laser
extensometer by a Host computer with a standard serial communications port.
The measured specimen displacement displayed on the LCD readout (that is, the
output of the laser extensometer) is reported as an ASCII value from -99999 to
+99999 (that is, 5 numerical characters with polarity sign and no decimal point)
back to the host computer via the serial input/output port.
When the laser extensometer is powered up it transmits the prompt character (:)
over the serial input/output port indicating that it is ready to receive a Command.
If the command received is not valid, the laser extensometer returns a ? followed
by a : (that is, the prompt character) to alert the host that it did not understand the
command received and is waiting for another. Valid commands execute as
described in the Command List section below.
Note The prompt character (:) is returned:
-after executing a valid command.
-after responding to an invalid command (see above).
-after receiving only a carriage return from the host.