PcoPidCon (FB)

FUNCTION_BLOCK PcoPidCon

This function block is designed to be the primary controller to e.g. PCO_MOTCON or PCO_VALVCON. The function block has build in a PID-controller, and software for manual positioning.

InOut:

Scope	Name	Type	Initial	Comment
Input	SpExt	INT	0	1: External setpoint. Calculated setpoint or output from another PID controller (e.g. PCO_PIDCON) in a cascade control system.
	PV	INT	0	2: Process value (to be controlled). Process value obtained from the system
	Track	BOOL	FALSE	3: Tracking mode. PCO_PIDCON can be set in Tracking mode if Track = TRUE. Output of the controller will be set to TRACK_VALUE. (Track mode has higher priority compared to balancing mode). Track is independent of operation mode of PCO_PIDCON.
	TrackSp	INT	0	4: Tracking value. Output of the controller will be set to TrackSp if Track = TRUE
	Bal	BOOL	FALSE	5: Balancing mode. PCO_PIDCON can be set in Balancing mode if Bal = TRUE and Track = FALSE. Output of the controller will be set to BalSp. Bal is independent of operation mode of PCO_PIDCON.
	BalSp	INT	0	6: Balancing setpoint. Output of the controller will be set to BalSp if Bal = TRUE
	RevAct	BOOL	FALSE	7: RevAct = FALSE, controller will increase output if Setpoint is less than Process value. RevAct = TRUE, controller will decrease output if Setpoint is greater than Process value
	EnAuto	BOOL	TRUE	Enable auto operation of PID controller
	ActPos	INT	0	9: controller position of the controller Scaling 0-10000
	RampTime	TIME	TIME#30s0ms	10: Controller time. (from 0% to 100 % )
	RampActive	BOOL	FALSE	11: RampActive= TRUE activates ramp under manual positioning.
Inout	Scada	PCO_PIDCON_TYPE		12: Structure variable for connection to Scada system
Output	Error	BOOL	FALSE	Operation continues with error. The output ErrorID gives more details about the error.
	Out	INT	0	1: Output of the controller (0-27648)
	OutMax	BOOL	FALSE	2: Output limited to the high value
	OutMin	BOOL	FALSE	3: Output limited to the low value
	ErrorID	ERROR_ID	ERROR_ID.NO_ERROR	4: Err number, Output provides an error identifier if an invalid value was applied to an input