Ecom Instruments MCAL 4200 Instruction Manual page 73

Query Commands
Commands that ask for information. They always end with a „?". For example:
Returns the current modes of the upper and lower displays.
Compound Commands
Commands that contain more than one command on one line. For example:
Sets the calibrator to measure RTD in the lower display and sets RTD type to Cu 10.
Overlapped Commands
Commands that require more time to execute than normal. The command *WAI can be used
after the overlapped command to tell the calibrator to wait until the command finishes before
executing the next command. For example:
Triggers the pulse train. Once the pulse train has been triggered, the calibrator can proceed
to the next command.
Sequential Commands
Commands that are executed immediately after the are entered. This type includes most of
the commands.
7.3-2 Character Processing
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
• he most significant data bit is ignored.
• Upper or lower case is acceptable.
7.3-3 Response Data Types
The data returned by the calibrator can be divided into four types:
Integer
For most computers and controllers they are decimal numbers ranging from -32768 to 32768.
For example:
Floating
Numbers that have up to 15 significant figures and exponents. For example:
Character Response Data (CRD)
Data returned as keywords. For example:
Indefinite ASCII (IAD)
Any ASCII characters followed by a terminator. For example:
72
FUNC?
LOWER_MEAS RTD; RTD_TYPE CU10
TRIG; *WAI
*ESE 140; *ESE? returns 140
CPRT_COEFA? returns 3.908000E-03
RTD_TYPE? returns PT385_10
*IDN? returns MARTEL, ASC300, 250, 1.00