Gain/Offset function

The terminal is compared to the vendor calibration data by the vendor in order to achieve the specified output accuracy. The vendor calibration data are password protected and cannot be changed.

If manipulation of the output value is necessary on the system side,

the User Scale with gain/offset should first be used,
or the user can store some calibration data in the terminal. The User Scale can then also function for this purpose.

See also the block diagram.

With:

Gain_scale	= 0x80n0:12	UserScale Gain
Offset_scale	= 0x80n0:11	UserScale Offset
Gain_user	= 0x80n0:16	UserCalibration Gain
Offset_user	= 0x80n0:15	UserCalibration Offset (with the bipolar EL403x terminals 0x800 = 2048_decto be added)
Gain_vendor	= 0x80nF:02	VendorCalibration Gain
Offset_vendor	= 0x80nF:01	VendorCalibration Offset
X_DAC	= 0x80nE:01	DAC Raw Value
Ys	EtherCAT PDO setpoint

Is the influence of the scaling:
User scaling enabled:	Ysc = Ys1 * Gain_scale*2^-16 + Offset_scale
User scaling disabled:	Ysc = Ys1
And the influence on the calibration values:
Vendor calibration enabled:	X_DAC = Ysc * Gain_vendor *2^-16 + Offset_vendor
User calibration enabled:	X_DAC = Ysc * Gain_user *2^{- 20} + Offset_user
No calibration enabled:	X_DAC = Ysc

	No simultaneous enablement of vendor and user calibration Only the vendor calibration (0x80n0:08 "Enable vendor calibration") or the user calibration (0x80n0:01 "Enable user calibration") may be enabled.