Omega PCL340 Manual De Usuario

25

The calibrator may be controlled using commands and queries. All
commands may be entered using upper or lower case. The
commands are divided into the following categories:

Only the calibrator uses these commands. For example 

VAL?

asks for the values displayed on the calibrator display.

Standard commands used by most devices. These commands
always begin with an “*”. For example

*IDN?

tells the calibrator to return its identification.

Commands that ask for information, they always end with a “?”.  For
example:

FUNC?

Returns the current modes of the calibrator displays.

Commands that contain more than one command on one line. For
example;

PRES_UNIT LOWER, PSI, PRES_UNIT?

Sets the pressure units to PSI and queries it to verify.  It will return:

PSI, PSI, PSI

The data entered into the calibrator is processed as follows:

• ASCII characters are discarded if their decimal equivalent is less

than 32 (space), except 10 (LF) and 13 (CR):

• Data is taken as 7-bit ASCII

• The most significant data bit is ignored.

• Upper or lower case is acceptable.

The data returned by the calibrator can be divided into four types: