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Iii-6.4 dela1 ( delay time (no. 53)) 129, Dela1 129, Delay time 129 - 130 – West Control Solutions KS98-1 User Manual

Page 129

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III-6.4

DELA1 ( delay time (No. 53))

If the clock input is not wired, the function calculates y1(t) = x1 (t-n

· ts). ( ts= sampling interval,Delay = delay factor n)

Unless clock input clock is wired, the following is applicable: input variable

x1 is output with a delay by n times the amount

of adjusted sampling interval ts ( phase shift by n ts

× ). The effective delay time corresponds to integer multiples of the selec-

ted time group (sampling interval ts 100/200/400/800 ms). The delay time range covers n= 0 to 255 (0

255

.....

× ts)

With clock input clock wired, DELA1 acts like a shift register with a length of max. 255=Parameter

delay. This register can be switched on by one step by an external event preset .

Switching on is only with a positive flank ( transition from 0 r 1) at the clock input plus the adjusted delay factor (pa-
rameter

delay).

Example:
With

delay = 4 change-over at output y is only after 4 flank changes from 0 r 1 at input clock

Preset: The output provides the value applied to Preset. After (n+1) positive flanks at clock

or (n+1) sampling cycles t

S

(if clock isn't wired), the first input value x1 appears at y1.

reset:

The output provides value 0. After a positive flank at clock, value zero still is provided
for the sampling interval ts.

The function has a ‘memory’. This means: after power-on, it continues operating with values y1, z1 and z2, which exis -
ted at power-on, provided that the RAM data are still unchanged.

Inputs/outputs

Digital inputs
clock

= 0->1 clock for delaying

preset

= 1 The preset value is taken to the output

reset

= 1 Output

y1 is set to zero

Analog inputs
x1

Input variable to be delayed

Preset

Value output without delay by

preset = 1

With several simultaneous control commands:
reset

= 1 has priority over preset and stop

preset = 1 has priority over stop

Analog output
y1

Delayed output variable

Parameter:

Parameter

Description

Range

Default

Delay

Delay factor n

0/1/.....255

0

Time functions

9499-040-82711

III-129

DELA1 ( delay time (No. 53))

0

n

t

reset

preset

clock

X1

Preset

Y1