α2 Simple Application Controllers

AL-VLS/WIN-E Settings for Dedicated Protocol 6

FB Name

FB Symbol

Description of Function Block

Word Device

Bit

Device

1

0 0 0

The Boolean Function Block uses Boolean

Boolean

2

P

O

algebra to control the ON/OFF state of an

3

output. An operational expression consists

-

[BL]

4

B L

of either the AND, OR, NOR, XOR or NOT

form.

0 0 0

The Set/Reset Function Block either holds

an output ON (set) or releases the output

Set/Reset

S

P

O

OFF (reset.) Priority can be given to either

-

[SR]

R

input pin if both inputs have been energised

SR

simultaneously. The default priority setting

is dedicated to the reset input pin.

0 0 0

The Pulse Function Block sends a single

Pulse

I

P

O

pulse to the output pin if the input pin

receives either an “ON to OFF”, “OFF to

-

[PL]

P L

ON” or “ON to OFF And OFF to ON” input

operation.

The Alternate Function Block is used to

0 0 0

reverse the ON and OFF state of the output

I

O

Alternate

as and when the input pin receives a signal.

-

C

[AL]

The output will be set ON when the input

A L

pin goes high and remain ON until the input

receives the second rising edge.

0 0 0

The Delay Function Block provides an ON

Set ON Delay

Delay

I

P

O

delay timer and an OFF delay timer. Time

Current ON Delay

[DL]

C

intervals for either situation can be set. The

Set OFF Delay

D L

time unit can be set to 10ms, 100ms or 1s

Current OFF Delay

increments.

The One Shot Function Block awaits a

0 0 0

signal supplied to the input pin thereafter

One Shot

I

P

O

setting the output according to the specified

Set One Shot

[OS]

C

time. The timing parameters control the

Current One Shot

OS

state of the output (depending on the

priority setting). The time unit can be set to

10ms, 100ms or 1s increments.

Cycle or Time

0 0 0

The Flicker Function Block changes the ON

Current Cycle or Time

I

P

O

Flicker

and OFF state of the output according to a

ON Flicker

[FL]

preset flicker time. The time unit can be set

Current ON Flicker

F L

to 10ms, 100ms or 1s increments.

OFF Flicker

Current OFF Flicker

Time

0 0 0

The Time Switch Function Block uses a

P

O

Switch

predefined time schedule to control the ON

*1

[TS]

T S

and OFF status of the output.

α2 Simple Application Controllers

AL-VLS/WIN-E Settings for Dedicated Protocol 6

FB Name

FB Symbol

Description of Function Block

Word Device

Bit

Device

The Time Switch maintenance Function

Time

0 0

0

Block uses a predefined time schedule to

P

O

control the ON and OFF status of the

*1

Switch m

output. The function block can be setup

[TSm]

T S m

from the TopMenu “Parameter” via the front

panel keys.

0 0 0

The Counter Function Block increments the

current value by one as and when the input

Counter

I

P

O

pin receives a signal. When the current

Count

[CN]

C

value reaches the set value the output is set

Current Count

CN

ON. The counter current value is reset as

and when the clear pin receives an input.

U

0 0 0

The Up/Down Function block positively or

negatively increments the counter until a

U/D

D

P

O

set value is reached thereby setting the

Up/Down Count

Counter

C

output ON. A preset signal can also equal

Current Up/Down Count

UD

[UD]

P

the set value regardless of the current value

for the function block and thereby setting

the output ON.

The Compare Function Block monitors the

0 0 0

current value of the input pin in relation to a

Compare

I

P

O

preset expression. The expression consists

-

[CP]

of =,>,>=,<,<= or <>. If the compared value

CP

satisfies the expression subsequently the

output pin is set on.

Analog

0 0 0

The Analog Output function takes a digital

M

P

value input and delivers a corresponding

Ouput

E

analog voltage or current to a selected

[AO]

AO

channel on the AL2-2DA module.

Offset

0 0 0

The Offset Gain Function Block is based

I

P

upon a linear function Y=A/B X+C to which

Gain

Gain Analog Value

-

the value obtained from an analog input

OG

[OG]

(X:A01-A08) is set.

0 0 0

The Display Function Block is used as an

Display

I

P

interface between the user and the devices

held within the controller. Current values,

-

-

[DP]

DP

timer messages, user-defined messages

can be read.

0 0 0

The Z one Com pa re Fun ction Blo ck

Zone

I

P

O

identifies whether the input value lies within

-

Compare

a specified upper and lower limited zonal

[ZC]

Z C

area and if so changes the status of the

output accordingly.

0 0 0

The Schmitt Trigger Function Block

compares an input value to preset high and

Schmitt

I

P

O

low limits. The output is ON when the input

Trigger

value reaches the high limit and then falls

-

[ST]

S T

below the lower limit. The function only

processes the data when the function block

is receiving an input signal.

6 - 7

α2 Simple Application Controllers

AL-VLS/WIN-E Settings for Dedicated Protocol 6

FB Name

FB Symbol

Description of Function Block

Word Device

Bit

Device

0 0 0

The Hour Meter Function Block holds the

output status ON for a maximum of 32767

Set Hour

Hour

I

P

O

hours, 32767 minutes and 59 seconds. If

Meter

C

the input pin is turned OFF the elapsed

Current Hour

Set Minute

HM

[HM]

time will hold its value until either the clear

Current Minute

pin resets the time or the input pin is turned

ON again.

The Speed Detect Function Block is used to

I

0 0 0

count the incoming pulses max. 20Hz (with

Speed

U

P

O

an extension module max. of 1kHz) for a

Current Period

Detect

set period of time. The upper and lower lim-

Speed

C

[SPD]

its can be set from -32768 to +32767 and

Period

S PD

the Period interval’s set range is 1 to 32767

in 10ms increments.

The Pulse Width Modulation Function Block

changes the output status according to a

0 0 0

set period of time with a minimum of 100ms

I

P

O

PWM

a nd a ma x i mu m o f 3 2 7 67 0 0 ms i n

Current Period

[PWM]

increments of 100ms. The percentage duty

Period

PWM

for the function controls the amount of