Siemens AS 488/TM manual Configuration, Listing of Teleperm M standard function blocks Data blocks

This catalog is out of date, see note on page 3

System architecture

■Configuration

Listing of TELEPERM M standard function blocks

Data blocks

Type	Name	Function
GA	Data block for glo-	Storage of 256 analog values with error
	bal analog values	10-9;
		storage of process image, historical val-
		ues etc.
GB	Data block for glo-	Saving, scanning and linking of
	bal binary values	256 binary values;
		preferably for binary process inputs and
		outputs
GM	Data block for glo-	Saving, scanning and linking of 256 inter-
	bal flags	nal binary statuses
GT	Data block for glo-	Saving and generation of times/timers for
	bal times (timer)	execution of time-dependent functions
FA	Data field block for	Saving of internal/external analog values
	analog values	with error 10-9; preferably for internal
		results;
		extension of GA block
FSA	Data field block for	Saving of internal/external analog values
	analog values	with error 10-4; preferably for internal
		results
FB	Data field block for	Saving of internal/external binary values;
	binary data	extension of GB/GM blocks
FC	Data field block for	Saving of alphanumeric characters
	characters	(texts)

Blocks for analog and digital processing

Type	Name	Function
SUM	Adder	Y = X1 + X2 - X3 - X4
MUL	Multiplier	Y = X1 ⋅ X2
DIV	Divider	Y = X1/X2
RAD	Square root extrac-	Y= sqrt (X) or
	tor	Y = K ⋅ sqrt (X)
LN	Logarithm extractor	Y = KF ⋅ In X
EXP	Exponential value	Y = ex
ABS	Absolute value	X = X
INT	Integrator	Y = K ⋅ integral (X) dt, K = 1/T
DIF	Differentiator	Y(s)/X(s) = (T ⋅ s)/(1 + (T ⋅ s/v))
PT	Delay	Y(s)/X(s) = 1/(1 + T ⋅ s)
TOZ	Dead time	Y(s)/X(s) = e-s⋅ T
MIN	Minimum-value	Y = minimum of X1, X2, X3
	selection
MAX	Maximum-value	Y = maximum of X1, X2, X3
	selection
TOB	Dead band	Y = X - TOBU for X < TOBU
		Y = 0 for TOBU ≤ X ≤ TOBO
		Y = X - TOBU for X > TOBO
PLG	Progression block	Linear interpolation between 6 pairs of
		turning points
GW	Limit monitor	Limit check between 2 switching points
ASL	Analog-value switch	Y = X1 for S = "0"
		Y = X2 for S = "1"
SPEI	Analog-value moni-	Saving of max. 256 analog values
	tor

		System software
Blocks for binary processing
Type	Name	Function
VU	AND	A = E1 AND E2 AND E3
VO	OR	A = E1 OR E2 OR E3
VN	Negation	A = NOT E
VM	Flag	Flag of binary input signals (flip-flop)
VZ	Time delay	Delay for switching on and off
VS +	STEP M block	Freely programmable in STEP M
STEP
MPX	Multiplexer	To supply the STEP commands in the fol-
		lowing VS/KS block
BW	Binary selection	Selection of status combination from
		max. 3 binary signals
INKU	Increment converter	Converts analog values into opening or
		closing pulses
BCE	BCD input	Conversion of a BCD signal into an ana-
		log value
BCA	BCD output	Conversion of an analog value into a
		BCD signal
KA	Sequence start	Marks the beginning of an ON/OFF
		branch of a subgroup control
KAK	Sequence start	As KA, with additional functions
KB	Sequence	Conditions of a control step, for power
		plant systems
KBK	Sequence	As KB, with additional functions
KS	Sequence step	As KB, for process engineering systems
KV	Sequence branch	Branching of a sequence into max. 6
		branches, with process engineering sys-
		tems
KE	Sequence end	Last block in a sequence
KEK	Sequence end	As KE, with additional functions
HA	Auxiliary oil	Controls electric auxiliary oil pumps for
		supply of bearing oil to aggregates
EAR	Single analog-value	Allocates analog values from block out-
	marshalling	puts in GA blocks
EBR	Single bit marshal-	Links individual binary outputs to GB/GM
	ling	data blocks
UBR	Universal binary	Links 16 binary blocks to GB/GM data
	marshalling	blocks

Siemens PLT 112 · 2002 2/5