AVEVA™ Communication Drivers

Counter/timer data types

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Counter/timer data types

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Last UpdatedJul 29, 2024
3 minute read

Counter/Timer includes all structures and parameters for counters and timers provided by the system.

Note: Structural element names are predefined by the system and cannot be changed.

Data Format	Structural Element	Suffix	Data Type	Access	Value Range / Notes
Counter			VT_UI2	Read/Write	0 to 999
Timer			VT_I4	Read/Write	0 to 999000
IEC_COUNTER			<Structure>	N/A
Bool	.CU		VT_BOOL	Read/Write	FALSE or TRUE (Count Up)
Bool	.CD		VT_BOOL	Read/Write	FALSE or TRUE (Count Down)
Bool	.R		VT_BOOL	Read/Write	FALSE or TRUE (Reset)
Bool	.LD		VT_BOOL	Read/Write	FALSE or TRUE (Load)
Bool	.QU		VT_BOOL	Read/Write	FALSE or TRUE (Status of Up Count)
Bool	.QD		VT_BOOL	Read/Write	FALSE or TRUE (Status of Down Count)
Int	.PV		VT_I2	Read/Write	-32768 to 32767 (Preset Counter Value)
Int	.CV		VT_I2	Read/Write	-32768 to 32767 (Current Counter Value)
IEC_DCOUNTER			<Structure>	N/A
Bool	.CU		VT_BOOL	Read/Write	FALSE or TRUE (Count Up)
Bool	.CD		VT_BOOL	Read/Write	FALSE or TRUE (Count Down)
Bool	.R		VT_BOOL	Read/Write	FALSE or TRUE (Reset)
Bool	.LD		VT_BOOL	Read/Write	FALSE or TRUE (Load)
Bool	.QU		VT_BOOL	Read/Write	FALSE or TRUE (Status of Up Count)
Bool	.QD		VT_BOOL	Read/Write	FALSE or TRUE (Status of Down Count)
DInt	.PV		VT_I4	Read/Write	-2147483648 to +2147483647 (Preset Counter Value)
DInt	.CV		VT_I4	Read/Write	-2147483648 to +2147483647 (Current Counter Value)
IEC_LCOUNTER			<Structure>	N/A
Bool	.CU		VT_BOOL	Read/Write	FALSE or TRUE (Count Up)
Bool	.CD		VT_BOOL	Read/Write	FALSE or TRUE (Count Down)
Bool	.R		VT_BOOL	Read/Write	FALSE or TRUE (Reset)
Bool	.LD		VT_BOOL	Read/Write	FALSE or TRUE (Load)
Bool	.QU		VT_BOOL	Read/Write	FALSE or TRUE (Status of Up Count)
Bool	.QD		VT_BOOL	Read/Write	FALSE or TRUE (Status of Down Count)
LInt	.PV		VT_I8	Read/Write	-9223372036854775808 to +9223372036854775807 (Preset Counter Value)
LInt	.CV		VT_I8	Read/Write	-9223372036854775808 to +9223372036854775807 (Current Counter Value)
IEC_SCOUNTER			<Structure>	N/A
Bool	.CU		VT_BOOL	Read/Write	FALSE or TRUE (Count Up)
Bool	.CD		VT_BOOL	Read/Write	FALSE or TRUE (Count Down)
Bool	.R		VT_BOOL	Read/Write	FALSE or TRUE (Reset)
Bool	.LD		VT_BOOL	Read/Write	FALSE or TRUE (Load)
Bool	.QU		VT_BOOL	Read/Write	FALSE or TRUE (Status of Up Count)
Bool	.QD		VT_BOOL	Read/Write	FALSE or TRUE (Status of Down Count)
SInt	.PV		VT_I1	Read/Write	-128 to 127 (Preset Counter Value)
SInt	.CV		VT_I1	Read/Write	-128 to 127 (Current Counter Value)
IEC_UCOUNTER			<Structure>	N/A
Bool	.CU		VT_BOOL	Read/Write	FALSE or TRUE (Count Up)
Bool	.CD		VT_BOOL	Read/Write	FALSE or TRUE (Count Down)
Bool	.R		VT_BOOL	Read/Write	FALSE or TRUE (Reset)
Bool	.LD		VT_BOOL	Read/Write	FALSE or TRUE (Load)
Bool	.QU		VT_BOOL	Read/Write	FALSE or TRUE (Status of Up Count)
Bool	.QD		VT_BOOL	Read/Write	FALSE or TRUE (Status of Down Count)
UInt	.PV		VT_UI2	Read/Write	0 to 65535 (Preset Counter Value)
UInt	.CV		VT_UI2	Read/Write	0 to 65535 (Current Counter Value)
IEC_UDCOUNTER			<Structure>	N/A
Bool	.CU		VT_BOOL	Read/Write	FALSE or TRUE (Count Up)
Bool	.CD		VT_BOOL	Read/Write	FALSE or TRUE (Count Down)
Bool	.R		VT_BOOL	Read/Write	FALSE or TRUE (Reset)
Bool	.LD		VT_BOOL	Read/Write	FALSE or TRUE (Load)
Bool	.QU		VT_BOOL	Read/Write	FALSE or TRUE (Status of Up Count)
Bool	.QD		VT_BOOL	Read/Write	FALSE or TRUE (Status of Down Count)
UDInt	.PV		VT_UI4	Read/Write	0 to 4294967295 (Preset Counter Value)
UDInt	.CV		VT_UI4	Read/Write	0 to 4294967295 (Current Counter Value)
IEC_ULCOUNTER			<Structure>	N/A
Bool	.CU		VT_BOOL	Read/Write	FALSE or TRUE (Count Up)
Bool	.CD		VT_BOOL	Read/Write	FALSE or TRUE (Count Down)
Bool	.R		VT_BOOL	Read/Write	FALSE or TRUE (Reset)
Bool	.LD		VT_BOOL	Read/Write	FALSE or TRUE (Load)
Bool	.QU		VT_BOOL	Read/Write	FALSE or TRUE (Status of Up Count)
Bool	.QD		VT_BOOL	Read/Write	FALSE or TRUE (Status of Down Count)
ULInt	.PV		VT_UI8	Read/Write	0 to 18446744073709551615 (Preset Counter Value)
ULInt	.CV		VT_UI8	Read/Write	0 to 18446744073709551615 (Current Counter Value)
IEC_USCOUNTER			<Structure>	N/A
Bool	.CU		VT_BOOL	Read/Write	FALSE or TRUE (Count Up)
Bool	.CD		VT_BOOL	Read/Write	FALSE or TRUE (Count Down)
Bool	.R		VT_BOOL	Read/Write	FALSE or TRUE (Reset)
Bool	.LD		VT_BOOL	Read/Write	FALSE or TRUE (Load)
Bool	.QU		VT_BOOL	Read/Write	FALSE or TRUE (Status of Up Count)
Bool	.QD		VT_BOOL	Read/Write	FALSE or TRUE (Status of Down Count)
USInt	.PV		VT_UI1	Read/Write	0 to 255 (Preset Counter Value)
USInt	.CV		VT_UI1	Read/Write	0 to 255 (Current Counter Value)
IEC_TIMER			<Structure>	N/A
Time	.ST		VT_I4	Read/Write	-2147483648 to +2147483647 (Start Time)
Time	.PT		VT_I4	Read/Write	-2147483648 to +2147483647 (Present Time)
Time	.ET		VT_I4	Read/Write	-2147483648 to +2147483647 (Elapsed Time)
Bool	.RU		VT_BOOL	Read/Write	FALSE or TRUE (Running Status)
Bool	.IN		VT_BOOL	Read/Write	FALSE or TRUE (Start Input)
Bool	.Q		VT_BOOL	Read/Write	FALSE or TRUE (Pulse Output)
IEC_LTIMER			<Structure>	N/A
LTime	.ST		VT_I8	Read/Write	-9223372036854775808 to +9223372036854775807 (Start Time)
LTime	.PT		VT_I8	Read/Write	-9223372036854775808 to +9223372036854775807 (Present Time)
LTime	.ET		VT_I8	Read/Write	-9223372036854775808 to +9223372036854775807 (Elapsed Time)
Bool	.RU		VT_BOOL	Read/Write	FALSE or TRUE (Running Status)
Bool	.IN		VT_BOOL	Read/Write	FALSE or TRUE (Start Input)
Bool	.Q		VT_BOOL	Read/Write	FALSE or TRUE (Pulse Output)

AVEVA™ Communication Drivers

Counter/timer data types

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Counter/timer data types

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