The graphical user interface > Circuit Window > Selection menu

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The TACS menu gives access to most type of TACS components of ATP. The TACS sub-menu on the component selection menu contains the following items:

TACS sources

The Sources of TACS menu contains the following items:

Selection	Object name	Icon	ATP card	Description
Circuit variable	EMTP_OUT		TACS type 90-93	Value from the electrical circuit into TACS. 90 - Node voltage 91 - Switch current 92 - internal–variable special EMTP comp. 93 - Switch status Manages also data from universal machines
Models variable	TMODVAR		TACS type 27	Models output can be connected to TACS via this component
Constant	TCONST		TACS type 98	Displays a TACS constant on screen
DC – 11	DC_01		TACS type 11	TACS step signal source.
AC – 14	AC_02		TACS type 14	TACS AC cosine signal source.
Pulse – 23	PULSE_03		TACS type 23	TACS pulse train signal.
Ramp – 24	RAMP_04		TACS type 24	TACS saw-tooth train signal.
Ramp step	RAMPSTEP		TACS type 24 +11 +98	TACS ramp to constant value. Connect with AC source modulated to get easy ramp up AC source.
PMW 3-phase	TPMW6		TACS type 23 +14 +98	Pulse width modulated TACS source, 3-phase.

TACS transfer functions

All the older TACS transfer functions of previous ATPDraw versions are supported in version 3, but some of them has been removed from the component selection menu and replaced by a more general component: the General transfer function. This object defines a transfer function in the s domain and it can be specified with or without limits. The Order 1 component offers order 0/1 transfer function with a dynamic icon containing values and optional limits. Four more simple transfer functions are also supported: Integral, Derivative, first order High and Low pass filters.

Selection	Object name	Icon	ATP card	Description
General	TRANSF		TACS	General transfer function in s domain. Order 0-7. Named dynamic limits.
Order 1	TRANSF1		TACS	Order 0/1 with optional limits. Dynamic icon with transfer function.
Constant	TRANSFK		TACS	General transfer function in s domain. Order 0. Named dynamic limits.
Integral	INTEGRAL		TACS	Integral of the input multiplied by K.
Derivative	DERIV		TACS	Simple derivative transfer function.
Low pass	LO_PASS		TACS	First order low pass filter.
High pass	HI_PASS		TACS	First order high pass filter.

TACS devices

The following TACS Devices are supported in ATPDraw:

Selection	Object name	Icon	ATP card	Description
Freq sensor - 50	DEVICE50		TACS type 88,98 or 99	Frequency sensor.
Relay switch - 51	DEVICE51		TACS type 88,98 or 99	Relay-operated switch.
Level switch - 52	DEVICE52		TACS type 88,98 or 99	Level-triggered switch.
Trans delay - 53	DEVICE53		TACS type 88,98 or 99	Transport delay.
Pulse delay - 54	DEVICE54		TACS type 88,98 or 99	Pulse delay.
Digitizer - 55	DEVICE55		TACS type 88,98 or 99	Digitizer.
User def nonlin - 56	DEVICE56		TACS type 88,98 or 99	Point-by-point non-linearity.
Multi switch - 57	DEVICE57		TACS	Multiple open/close switch.
Cont integ - 58	DEVICE58		TACS type 88,98 or 99	Controlled integrator.
Simple deriv - 59	DEVICE59		TACS type 88,98 or 99	Simple derivative.
Input IF - 60	DEVICE60		TACS type 88,98 or 99	Input-IF component.
Signal select - 61	DEVICE61		TACS type 88,98 or 99	Signal selector.
Sample_track - 62	DEVICE62		TACS type 88,98 or 99	Sample and track.
Inst min/max - 63	DEVICE63		TACS type 88,98 or 99	Instantaneous minimum/maximum.
Min/max track - 64	DEVICE64		TACS type 88,98 or 99	Minimum/maximum tracking.
Acc count - 65	DEVICE65		TACS type 88,98 or 99	Accumulator and counter.
Rms meter - 66	DEVICE66		TACS type 88,98 or 99	RMS value of the sum of input signals.

Initial conditions

The initial condition of a TACS variable can be specified by selecting TACS object (type 77) under the TACS | Initial cond. menu.

The name of this component is INIT_T and its icon is.

Fortran statements

The component dialog box of the Fortran statements | General object provides a Type field where the user is allowed to specify the type of the object (input, output, inside) and an OUT field for the single line Fortran-like expression. These statements are written into the /TACS subsection of the ATP input file starting at column 12.

The Fortran statements | Math and Logic sub-menus include additional simple objects for the basic mathematical and logical operations.

General

Selection

Object name

Icon

ATP card

Description

F($1...$9)

TFORTRAN

TACS

type 98

Preferred FORTRAN expression. Use $Ii for inputs and $Dd for data to make object, modular.

General

FORTRAN1

TACS type 88,98 or 99

User specified FORTRAN expression (old type, not modular; can’t copy/paste it).

Fortran statements / Math

Selection	Object name	Icon	ATP card	Description
x - y	DIFF2		TACS 98	Subtraction of two input signals.
x + y	SUM2		TACS 98	Addition of two input signals.
x * K	MULTK		TACS 98	Multiplication by a factor of K.
x * y	MULT2		TACS 98	Multiplication of x by y.
x / y	DIV2		TACS 98	Ratio between two input signals.
\| x \|	ABS		TACS 98	Absolute value of the input signal.
- x	NEG		TACS 98	Change sign of the input signal.
sqrt (x)	SQRT		TACS 98	Square root of the input signal.
exp(x)	EXP		TACS 98	Exponent of input signal. e^x
log(x)	LOG		TACS 98	Natural logarithm og input signal.
log10(x)	LOG10		TACS 98	Logarithm of input signal.
rad(x)	RAD		TACS 98	Converts the input signal from degrees to radians.
deg(x)	DEG		TACS 98	Converts the input signal from radians to degrees.
rnd(x)	RND		TACS 98	Random number generator <x.

Fortran statements / Trigonom

Selection	Object name	Icon	ATP card	Description
sin	SIN		TACS 98	Sinus
cos	COS		TACS 98	Cosinus
tan	TAN		TACS 98	Tangens (sin/cos)
cotan	COTAN		TACS 98	Cotangens (cos/sin)
asin	ASIN		TACS 98	Inverse sinus
acos	ACOS		TACS 98	Inverse cosinus
atan	ATAN		TACS 98	Inverse tangens
sinh	SINH		TACS 98	Sinus hyperbolic
cosh	COSH		TACS 98	Cosinus hyperbolic
tanh	TANH		TACS 98	Tangenss hyperbolic

Fortran statements / Logic

Selection	Object name	Icon	ATP card	Description
NOT	NOT		TACS type 98	Logical operator. OUT = NOT IN.
AND	AND		TACS type 98	Logical operator. OUT = IN_1 AND IN_2.
OR	OR		TACS type 98	Logical operator. OUT = IN_1 OR IN_2.
NAND	NAND		TACS type 98	Logical operator. OUT = IN_1 NAND IN_2.
NOR	NOR		TACS type 98	Logical operator. OUT = IN_1 NOR IN_2.
>	GT		TACS type 98	Logical operator. Output = 1 if x > y, 0 otherwise.
>=	GE		TACS type 98	Logical operator. Output = 1 if x >= y, 0 otherwise.
=?	EQ		TACS type 98	Logical operator. Output = 1 if x = y, 0 otherwise.