The FB uses internally
- S_ValueDiagnostic FB from SafeDataValidation library.
Supported platforms: CODESYS 3.5
This FB calibrates linear sensor value i_InputValue (mV, mA) to SI unit (°C, bar, km/h, kg, etc…).
To operate correctly it is required that sensor operates linearly.
Calibrated output value and alarm/warning limits are the same unit than input variables i_OutputMin and i_OutputMax.
Enabled alarm/warning limits are sanity checked: i_HighAlarmLimit > i_HighWarningLimit > i_LowWarningLimit > i_LowAlarmLimit. Deviation cause parameter error.
The output value o_CalibratedValue is set to zero if i_Enable is FALSE, or parameter error is diagnosed.
All internal FB initializations are done on the rising edge of i_Enable.
All errors are reset on the rising edge of i_Enable.
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The FB uses internally - S_ValueDiagnostic FB from SafeDataValidation library. |
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Following parameters are taken into use at the rising edge of i_Enable: - i_HighAlarmLimit - i_HighWarningLimit - i_LowWarningLimit - i_LowAlarmLimit - i_EnableHighAlarm - i_EnableHighWarning - i_EnableLowWarning - i_EnableLowAlarm - i_DiagnosticDelay + Any initialized event code. |
Input variable name |
Data type |
Range |
Description |
i_Enable |
BOOL |
FALSE/TRUE |
Enable operation. |
i_InputValue |
DINT |
- |
Measured sensor value. |
i_InputMin |
DINT |
- |
Minimum of measured sensor value. |
i_InputMax |
DINT |
- |
Maximum of measured sensor value. |
i_OutputMin |
DINT |
- |
Minimum SI-unit value of the sensor, corresponds to i_InputMin. |
i_OutputMax |
DINT |
- |
Maximum SI-unit value of the sensor, corresponds to i_InputMax. |
i_HighAlarmLimit |
DINT |
- |
High alarm limit for calibrated value. |
i_HighWarningLimit |
DINT |
- |
High warning limit for calibrated value. |
i_LowWarningLimit |
DINT |
- |
Low warning limit for calibrated value. |
i_LowAlarmLimit |
DINT |
- |
Low alarm limit for calibrated value. |
i_EnableHighAlarm |
BOOL |
FALSE/TRUE |
High value alarm in use. |
i_EnableHighWarning |
BOOL |
FALSE/TRUE |
High value warning in use. |
i_EnableLowWarning |
BOOL |
FALSE/TRUE |
Low value warning in use. |
i_EnableLowAlarm |
BOOL |
FALSE/TRUE |
Low value alarm in use. |
i_DiagnosticDelay |
UINT |
- |
Diagnostic delay for alarms and warnings (ms). |
Output variable name |
Data type |
Range |
Description |
o_CalibratedValue |
DINT |
- |
Calibrated SI-unit value. |
o_HighAlarm |
BOOL |
FALSE/TRUE |
Calibrated value high alarm status. |
o_HighWarning |
BOOL |
FALSE/TRUE |
Calibrated value high warning status. |
o_LowWarning |
BOOL |
FALSE/TRUE |
Calibrated value low warning status. |
o_LowAlarm |
BOOL |
FALSE/TRUE |
Calibrated value low alarm status. |
o_ParameterError |
BOOL |
FALSE/TRUE |
Error in input parameters. |
This optional method sets pointer for event code.
Input variable name |
Data type |
Description |
i_Enable |
BOOL |
Enable operation. |
i_pEventCode |
POINTER TO EPEC_DITF.EventCode |
Pointer to signal event code value provided by the application. |
Source file topic100749.htm
Last updated 19-Dec-2024