triOS TpH - Page 33

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D01-068en201913 Manual TpH
TpH // Annex
11: Successful execution
After successful calculation or storage, the sensor changes to state 11 and awaits the ac-knowledgment by the control unit. The
control unit needs to transmit the sensor to change to state 2.
Termination / cancellation
The state machine can be terminated at any time by setting the state control register to the value 0 and, thus, changed back
to the normal operation mode. If the calibration has not yet been completed and the coecients are not saved, the original
coecients are restored.
If error bits are set, the controller unit must reset the state machine by changing to state 0.
Then, by selecting the parameter and the calibration method, the calibration must be re-initialized.
Error conditions
If an error occurs during calibration and the sensor remains in one of the above-mentioned error states, the calibration machine
must be terminated in any case and needs to be restart-ed if necessary. An error recovery within the calibration machine does
not take place.
State parameter register
State parameter register is divided into two parts:
FSMParam
High Byte Low Byte
Parameter Index Calibration method
The Parameter Index determines the parameter to be calibrated. The index depends on the parameter list as shown in the
measurement register area.
The Calibration method is determined by one of the following values:
Calibration method Denition State
0x00 No calibration (Reset FSM) –
0x01 Linear (2 point-) calibration (Oset, Scaling) 3, 4