PT200MI instruction manual 20
6.4.2 ENTER SERIAL CALIBRATION SETTING MODE 2 (accuracy ~1% by using mV/V entry)
The PT200MI displays "CAL 2" throughout the serial setting mode.
Transmit Response
(RS485)<ENQ>IDXX<CR><LF>
(RS232/RS485)CAL2<CR><LF>
(RS485)<ACK>XX<CR><LF>
(RS232/RS485) CAL ZERO<CR><LF>
PT200 displays “CAL 2”
1. ZERO CALIBRATION
Transmit Response
[string]<CR><LF> YES<CR><LF>SPIN 1.5000mV/V<CR><LF> or
Error [n]<CR><LF>
Options for [string]
N = Perform a zero offset calibration
J<CR><LF> to move to the next stage.
R<CR><LF> to return to normal weighing.
YES<CR><LF>SPIN 1.5000mV/V<CR><LF>
YES<CR><LF>
Note: If maximum capacity, division or multiplier was changed and no calibration has been performed
after the change, then the R command is invalid and N or J must be entered. Input N to perform
zero offset calibration only when there is no motion detected (motion annunciator is not lit) and no
load is on the weighing platform.
ERROR [n] : See the errors listing in section 6.3 above.
2. Span voltage setting
Transmit Response
[num]<CR><LF> SPIN [num]<CR><LF>YES<CR><LF>
Error [n]<CR><LF>
Options for [num]
The value of the signal for the applied calibration load.
N<CR><LF> to move to the next stage.
R<CR><LF> to return to normal weighing.
SPAN 7515<CR><LF>
YES
Note: Input the value as 5 digits without a decimal point. Units are 0.1 micro V/V or mV/V with 4 decimal
places with the decimal point removed.
3. SPAN CALIBRATION
Transmit Response
[num]<CR><LF> SPAN [num]<CR><LF>
Error [n]<CR><LF>
Options for [num]
The value of the calibration load that would produce the above entered signal.
R<CR><LF> to return to normal weighing. YES
Note: The calibration load is entered as a number without decimal point and must be a multiple of the
indicator step size. i.e if the indicator maximum capacity is 100.00 and the step is 0.05 and the
calibration load is 75.15 enter 7515 for num above.
Example: See the example for keypad entry of span calibration by mV/V entry at 6.2.2.
ERROR [n] : See the errors listing in section 6.3 above.
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