Model Predictive Control Professional function block MPCPro sample input template

Sampled analyzer measurements should be processed with the SAMPLE_IN template before being used in an MPCPro block. The MPCPro block can be configured to reference the template's OUT parameter. The SAMPLE_IN template is located in the Advanced Control palette in Control Studio and is named MPC Analyzer Template.

SAMPLE_IN template

The SAMPLE_IN template's OUT value indicates when a new sampled analyzer measurement is available. The OUT value always indicates the last Good Measured Value. The following rules apply:

• When a new measurement is available on the IN parameter of the SAMPLE_IN template, the new value is reflected in the SAMPLE_IN OUT value. The Status of OUT switches  from Good Non-Cascade Constant to Good Non-Cascade for a period of time determined by the MPC_EXEC parameter.

• The OUT parameter retains the last good measurement and a status of Good Non-Cascade Constant when a new measurement is not available.

• The OUT parameter retains the last good value and a status of Good Cascade Constant if:

• The status of IN is Bad

• The instrument is in calibration as indicated by the CAL_ANALYZE discrete input (1=Analyze, 0=Calibrate Active)

• An instrument fault is detected as indicated by the FAULT discrete input (1=Fault, 0=Good)

• The ANALYZE_OPT parameter (FLAG or VALUE) must be configured to indicate if a new measurement is either shown through the NEW_DATA (0=>1) discrete input to the block or based on an IN change in the VALUE option.

SAMPLE_IN configuration parameters

The configuration parameters for the SAMPLE_IN template include those shown in the following table.