Volume pwrb
Attributes: Runtime \| Development \| System \| Template \| Detail C Binding: Struct \| Class \| Code ClassTree	INDEX NO INDEX

Class Count
Version	1.0
Modified	08-MAR-2026 11:05:32.00
Code	rt_plc_io.c

 Pulse counter.


 The counter can be increased, decreased, cleared or set
 equal to a present value.
 The counter is triggered on leading edges.

Hints

 The object can be used as a 'pulse counter card' in the
 software at maximum one pulse every second (edge
 detecting) loop , i.e. a maximum of 25 Hz, if the base
 period T0 is equal to ScanTime of the fastest possible
 running PLC program ( = 20 milliseconds) of the node.

RtBody attributes pwr_sClass_count
Boolean	CountUp	up	A leading edge yields a counting-up and Accum is increased by one.
Boolean	CountDown	do	A leading edge yields a counting-down and Accum is decreased by one.
Boolean	Clear	c	A leading edge clears Accum.
Boolean	Init	i	A leading edge sets Accum = Preset.
Int32	Accum	PI	Accumulated counter value. This value may be used as RawValue of the PiPos object on page 3-265. The range is -2 147 483 648 to 2 147 483 647. So it will be possible to accumulate pulses continuously during 994 days at 25 Hz without overflow, if Accum = 0 at the beginning.
Boolean	Pos	pos	Indicates if Accum > 0, or not. FALSE means that Accum >= 0 and TRUE means that Accum > 0.
Boolean	Zero	z	Indicates if Accum = 0, or not. FALSE means that Accum != 0 and TRUE means that Accum = 0.
Boolean	Neg	neg	Indicates if Accum < 0, or not. FALSE means that Accum >= 0 and TRUE means that Accum < 0.
Boolean	Equal	eq	Indicates if Accum = Preset, or not. FALSE means that Accum != Preset and TRUE means that Accum = Preset.
Int32	Preset	Preset	Specifies a preset integer value.
Int32	AccPre	AccPre
Int32	AccAccum	AccAccum	The operator's authorities to change the Preset respectively Accum attribute. 0 -- Changes not allowed. !=0 -- Changes allowed.

DevBody attributes
PlcNode	PlcNode

GraphPlcNode
object_type	101
parameters[0]	4
parameters[1]	0
parameters[2]	5
parameters[3]	0
subwindows	0
graphmethod	0 (standard, individual attributes)
graphindex	0
default_mask[0]	11
default_mask[1]	5
segname_annotation	1
compmethod	4
compindex	0
tracemethod	0
traceindex	0
executeordermethod	2
objname	Count
graphname	Count
debugpar

Attributes detail

CountUp Input
Class	Input
Type	Boolean
Flags	STATE \| NOEDIT \| NOINVERT \| REDUTRANSFER
GraphName	up
Body	RtBody

 A leading edge yields a counting-up and Accum is
 increased by one.

CountDown Input
Class	Input
Type	Boolean
Flags	STATE \| NOEDIT \| NOINVERT \| REDUTRANSFER
GraphName	do
Body	RtBody

 A leading edge yields a counting-down and Accum is
 decreased by one.

Clear Input
Class	Input
Type	Boolean
Flags	STATE \| NOEDIT \| NOINVERT \| REDUTRANSFER
GraphName	c
Body	RtBody

 A leading edge clears Accum.

Init Input
Class	Input
Type	Boolean
Flags	STATE \| NOEDIT \| NOINVERT \| REDUTRANSFER
GraphName	i
Body	RtBody

 A leading edge sets Accum = Preset.

Accum Output
Class	Output
Type	Int32
Flags	STATE \| NOEDIT \| REDUTRANSFER
GraphName	PI
Body	RtBody

 Accumulated counter value. This value may be used as
 RawValue of the PiPos object on page 3-265.
 The range is -2 147 483 648 to 2 147 483 647. So it
 will be possible to accumulate pulses continuously
 during 994 days at 25 Hz without overflow, if Accum = 0
 at the beginning.

Pos Output
Class	Output
Type	Boolean
Flags	STATE \| NOEDIT \| REDUTRANSFER
GraphName	pos
Body	RtBody

 Indicates if Accum > 0, or not. FALSE means that Accum
 >= 0 and TRUE means that Accum > 0.

Zero Output
Class	Output
Type	Boolean
Flags	STATE \| NOEDIT \| REDUTRANSFER
GraphName	z
Body	RtBody

 Indicates if Accum = 0, or not. FALSE means that Accum
 != 0 and TRUE means that Accum = 0.

Neg Output
Class	Output
Type	Boolean
Flags	STATE \| NOEDIT \| REDUTRANSFER
GraphName	neg
Body	RtBody

 Indicates if Accum < 0, or not. FALSE means that Accum
 >= 0 and TRUE means that Accum < 0.

Equal Output
Class	Output
Type	Boolean
Flags	STATE \| NOEDIT \| REDUTRANSFER
GraphName	eq
Body	RtBody

 Indicates if Accum = Preset, or not. FALSE means that
 Accum != Preset and TRUE means that Accum = Preset.

Preset Intern
Class	Intern
Type	Int32
Flags
GraphName	Preset
Body	RtBody

 Specifies a preset integer value.

AccPre Intern
Class	Intern
Type	Int32
Flags	REDUTRANSFER
GraphName	AccPre
Body	RtBody

AccAccum Intern
Class	Intern
Type	Int32
Flags
GraphName	AccAccum
Body	RtBody

 The operator's authorities to change the Preset
 respectively Accum attribute.

  0   -- Changes not allowed.
  !=0 -- Changes allowed.

PlcNode Buffer
Class	Buffer
Type	PlcNode
Flags	INVISIBLE
Body	DevBody