Flintec DAS 72.1 User Manual
Page 54
C.5
CALIBRATION PROCEDURE.
The calibration interface features a “TRACEABLE ACCESS CODE” (TAC), as is required for use in “Approved”
applications (see section 7, “USE IN APPROVED APPLICATIONS” for more details). This feature also ensures
that access to the calibration functions is protected from inadvertent or unauthorised change. The following
parameters are considered as CALIBRATION commands:
•
CE:
Calibration Enable - returns the current TAC value.
•
CZ:
Calibrate zero - sets the system zero point.
•
CG:
Calibrate gain - sets the system gain.
•
CM:
Calibrate maximum - sets the maximum allowable display value.
•
DS:
Display step size - sets the output incremental step size.
•
DP:
Display decimal point - sets the position of the output decimal point.
•
ZT:
Zero track enable.
•
FD:
Factory default setting (return to)
•
CS:
Calibration save.
Example: setup of zero point, gain and decimal point.
The choosen test weight has the value 5000 increments. That could be 500 g, 5 kg or also 5000 kg. We
calibrate with 500 g. The decimal point is setup by command DP, here 1 figure after decimal point. A
measured weight of 500 g is displayed as 500.0.
Master ( PC / PLC ) sends
DAS 72.1 responds
Result
CE
¿
E+00017
Request: TAC-counter CE = 17
CE_17
¿
OK
Calibration sequence active
Scale no load !
CZ
¿
OK
System zero point saved
CE_17
¿
OK
Calibration sequence active
Put calibration weight on (500 g) !
CG_5000
¿
OK
Setting span
CG
¿
G+05000
Request: span 5 000 d
CE_17
¿
OK
Calibration sequence active
DP_1
¿
OK
Setting: decimal point 0000.0
CE_17
¿
OK
Calibration sequence active
CS
¿
OK
Save calibration data in EEPROM
Zero point, gain and decimal point position were saved in the EEPROM; the calibration counter (TAC) is
increased automatically by 1.
Page 54
Manual DAS 72.1