CMC_PidT1 (FB)

FUNCTION_BLOCK CMC_PidT1

PIDT1 Controller

• The PI controller changes its output Cv (manipulated variable) until input Pv (controlled variable) is equal to input Sp (command variable).

• Additional pre filter for DT1 - Component available (optional).

• I or DT1 components can be switched off by setting the respective time equal to zero.

InOut:

Scope	Name	Type	Comment
Input	Sp	REAL	Command variable (set point)
	Pv	REAL	ProcessValue, Actual Value
	Kp	REAL	Proportional coefficient, specified as a percentage value
	Ti_Cycles	REAL	Integral action time scaled to the PLC cycle time
	Td_Cycles	REAL	Derivative action time scaled to the PLC cycle time
	T1_Cycles	REAL	Returning time scaled to the PLC cycle time
	Max_Cv	REAL	High limit for the manipulated variable Cv
	Min_Cv	REAL	Low limit for the manipulated variable Cv
	Set	BOOL	Enable for setting to initial value Init
	Init_Cv	REAL	Initial value for the manipulated variable Cv
	Reset	BOOL	Reset of the manipulated variable Cv to 0
Output	Cv	REAL	Output for the manipulated variable Control Value
	State_Max	BOOL	High limit has been reached
	State_Min	BOOL	Low limit has been reached

Structure:

• CMC_PidT1.zACTION_ABGLEICH (ACT)
• CMC_PidT1.zACTION_DT1m_Anteil (ACT)