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BKCAL_IN/BKCAL_OUT in cascate loops

When I am using two cascate PID loops (OUTPUT of the outer PID connected in CAS_IN of inner PID), frequently, the inner loop reaches your maximum value,
but the outer loop go on increasing its output (a windup effect). It seems that it´s possible to
overcome this using the BKCAL pins. If it´s true, How must be the configuration of PID blocks?
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You can use NI-FBUS Configurator to save your FBPA configuration in FCP format, and send the FCP file
or your PID configuration diagram to fieldbus.support@ni.com for further support.

BTW: What kind of PID function block are you using in your configuration settings?
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