DrvControlModbusDCS (FB)

FUNCTION_BLOCK DrvControlModbusDCS

This function block can be used to control DCS drives with ABB Drives profile using Modbus communication block.

StatusWord(Sw) is read from drive through Modbus communication block using inout variable DriveData.

Controlword(Cw) will be build by the function block according to the ABB drives profile state machine. ControlWord will be send via inout DriveData and the used communication block to the drive

Function block provides standard start/stop signals to control the drive and standard diagnosis signals are read from the drive. .. NOTE:: The Function Block is must be used for DCS drives using ABB drive profile for Modbus protocol only. The data transfer to the DCS drive is realized via the IN_OUT variable DriveData, which must be connected to DrvModbusTcp or DrvModbusRtu function blocks.

InOut:

Scope	Name	Type	Initial	Comment
Input	Enable	BOOL	FALSE	1: A rising edge (Enable = TRUE) starts the operation, the output Busy goes to TRUE. All other inputs are read and considered continuously. A falling edge (Enable = FALSE) aborts the operation. During Aborting the Busy is still TRUE. Afterward all outputs are reset.
	SwitchOn	BOOL	FALSE	2: Switch On, TRUE = Start; FALSE = stop along currently active stop ramp - No rising edge needed to restart if AutoStart = TRUE
	Run	BOOL	FALSE	3: Start normal operation. Bit 3 on Control Word. If RUN = FALSE drive stops, Stop mode depends on parametrization of the drive - no rising edge needed
	StopEmcyCoast	BOOL	TRUE	4: Low active, emergency coast stop to drive: FALSE = stop by coast, TRUE = no stop
	StopEmcyRamp	BOOL	TRUE	5: Low active, emergency stop to drive: FALSE = stop by ramp, TRUE = no stop
	Reset	BOOL	FALSE	6: Reset drive faults and ‘Error’ output
	AutoStart	BOOL	FALSE	7: Enables the autostart function, together with SwitchOn and Run an internal retry to restart the drive is performed steadily. Eg. after return from local control. Be careful, Drive will restart automatically! Check the settings made in the Start mode Parameter group of the drive Ex: 21.10 FlyStart in DCS800
	ControlWordB11	BOOL	FALSE	8: Bit 11 on Control Word - according to user specific drive configuration.
	ControlWordB12	BOOL	FALSE	9: Bit 12 on Control Word - according to user specific drive configuration.
	ControlWordB13	BOOL	FALSE	10: Bit 13 on Control Word - according to user specific drive configuration.
	ControlWordB14	BOOL	FALSE	11: Bit 14 on Control Word - according to user specific drive configuration.
	ControlWordB15	BOOL	FALSE	12: Bit 15 on Control Word - according to user specific drive configuration.
	SpeedRef	INT	0	13: Speed reference value as 16bit integer: -20000 .. 20000 will be send to drive as reference value1. Valid range: for ACS880 and ACX5x0 limited to -20000 .. +20000. See drive manual for specific scaling parameter, e.g. ACS580= Par.30.12, ACS880= Par30.12
	RefValue2	INT	0	14: Reference value 2 as 16bit integer to drive -10000..+10000 will be send to drive as reference value2. Valid range: for ACS880 and ACX5x0 limited to -10000 .. +10000 See drive manual for specific scaling parameter, e.g. ACS580= Par.30.20, ACS880= Par30.20
Inout	DriveData	DrvDataType		15: drive reference variable to connect to all function blocks of this drive
Output	Busy	BOOL	FALSE	1: Operation is running (while output Error is FALSE)
	Error	BOOL	FALSE	2: Operation is stopped with error (while output Busy is FALSE). This output is TRUE for at least one cycle or until Enable is set to FALSE. The output ErrorID gives more details about the error.
	ErrorID	ERROR_ID		3: Error Code
	WarnAct	BOOL	FALSE	4: Active warning. Operation is running with warning . This output is TRUE for at least one cycle or until Enable is set to FALSE. The output WarnIDLast gives more details about the warning.
	WarnIDLast	WARNING_ID		5: Warning code of last active warning
	NoConToDrive	BOOL	FALSE	6: StatusWord = 0; Most probably reason: No connection to drive can be established. Check output Online of communication block. If Online is TRUE and NoConToDrive is still high, then restart the drive. If Online is TRUE and NoConToDrive is still high, then restart the drive.
	Ready	BOOL	FALSE	7: Ready to switch on - Bit 0 in SW
	Operating	BOOL	FALSE	8: Operating - drive is modulating ready reference, Bit 2 in SW
	OnInhibited	BOOL	FALSE	9: On inhibited active - start not possible, Bit 6 in SW
	AtSetpoint	BOOL	FALSE	10: Actual value is in setpoint tolerance zone, Bit 8 in SW
	Tripped	BOOL	FALSE	11: Drive is tripped, Bit 3 in SW
	Alarm	BOOL	FALSE	12: Drive has an alarm, Bit 7 in SW
	LocalCtrl	BOOL	FALSE	13: Drive control location: Local - NOT(Bit 9) in SW (Not Remote)
	ActSpeed	INT	0	14: Actual speed read from drive. For scaling see drive documentaion. Mostly -20000 .. +20000 e.g.: Ref1min/ Ref1max Par30.11/12 for ACS5x0 or ACS880
	ActValue2	INT	0	15: Actual value 2 read from drive
	ActStatusWord	WORD	0	16: Actual Status Word read from drive
	UsedControlWord	WORD	0	17: used Control Word, built in function block
	Message	STRING(65)	‘’	18: Text message, state of ABB-Drives profile state machine