Command Group: Calibration
CG - Set the calibration gain (span) value
read 3,4 write 4,4
CG Set the calibration gain (span) value - this is the reference point for the calibration under load, and is subject to TAC control. The lower limit for CG is 1, the upper limit is listed above. The weight signal used for calibration should be as close as possible to the maximum allowable display value (CM) so as to ensure optimum calibration accuracy. A feature provided is the ability to recall the value of the calibration weight used for the current calibration by the issue of a CG command without any parameters. This is useful information for future calibration purposes or for diagnostics. When calibrating the span, the actual value of the calibration weight must be entered as a parameter of the CG command, for example if the output 25000 is required for the weight placed on the load cell, then the calibration command becomes CG 25000. The command returns "ERR" and has no updating action unless it is preceded by the CE XXXXX command, where XXXXX is the current TAC.
If the load applied to calibrate the span is less than 1% of full scale (2mV/V), the gain calibration will fail and 'ERR' will be returned.
For further information, please see Calibration Procedure. Factory default setting: 20000 at approx. 2mV/V input.