Lake Shore Model 321 Autotuning Temperature Controller User’s Manual4-10 Remote Operation4.2.1 Display CommandsThis paragraph provides a detailed description of each Display Command. The display commandsallow the interface to act as a virtual display. Display data, as well as format, can be transferred. Anexplanation of the command structure is shown below.!! ?! * * > ) E * '8 ! "#$ %"#$ % & & ''& ''& '()*& '()*& ( @ H )/. . -. ". $@ G ) 8 * ( *! 5 38 8 '((+ / * 7(. * ( . - * -( . "* #8!. $ * !((( 5*! 8 G )BE( * * QIDN? Identification Query.Input: QIDN?Returned: Manufacturer,model number,0,firmware dateRemarks: Identifies the instrument model and software level. "0" in the returned syntax is inplace of the serial number.Example: LSCI,MODEL321,0,121393[term]CDAT? Sensor Data Query.Input: CDAT?Returned: +/- 000.0Remarks: A free field is active here. The value returned is 7 characters: a sign, 5 digits anda decimal point. The last digit may be a null.Example: +1.2345[term] Typical response for a voltage query.-123.4 [term] Typical response for a degrees Celsius query.+234.5 [term] Typical response for a kelvin or degrees Celsius query.CUNI Set Control Units Status.Input: CUNI K, CUNI C, or CUNI SReturned: NothingRemarks: Set units parameter with K for kelvin, C for Celsius, or S for the appropriatesensor units (volts, ohms, or millivolts).Example: If operating in kelvin with a Model 321-01, CUNI S[term] makes the units volts;being the sensor units for a diode sensor. The Model 321-02 platinum controllerhas sensor units of ohms, and the Model 321-04 thermocouple controller hassensor units of millivolts.
