Echelon LonPoint Application and Plug-In Manual do Utilizador descarregar pdf (Página 22)

2-4 Digital Input Functional Block

found. This field may contain up to 30 characters.

This value is separate from the device’s location

property.

Processing Affects the translation of incoming data to the value

passed to the output network variable. There are five

processing options:

Direct, Delayed, Toggled,

Pulsed, and One-Shot.

The

Direct option causes data to be output directly

after the debounce and invert functions have

executed.

The

Delayed option specifies a delay from a change

on the input to an update on the output network

variable. A change from Off to On is delayed by the

time indicated in the

On Delay Time field. A

change from On to Off is delayed by the time

indicated in the

Off Delay Time field.

The

Toggled option causes the output data to toggle,

or change state, every time the input data changes

from Off to On. For example, if a Digital Input

functional block is attached to a push button and the

functional block is configured with the

Toggled

option, the network variable output value will change

every time the button is pushed.

The

Pulsed option generates a pulse on the output

network variable every time the input data changes

from Off to On. The pulse is generated after a delay

specified on the

On Delay Time field. The duration

of the pulse is specified on the

Pulse Time field. It

does not matter how long the input data remains on,

the output will always send a pulse of the specified

length after waiting the configured delay. If a delayed

pulse is re-triggered during a pulse, the delay will be

ignored. If a pulse is re-triggered during a delay, the

trigger will be ignored.

The

One-Shot option generates a pulse on the output

network variable every time the input data changes

from Off to On. The pulse is generated after a delay

specified on the

On Delay Time field. The duration

of the pulse is specified in the

Pulse Time field. If

the input data changes from Off to On while the

pulse is being sent, the pulse timer will be reset (i.e.,

if a two second pulse was retriggered after one

second, the output would be on for two more seconds,

or three seconds total).

On Delay Time Use this field with the

Delayed, Pulsed, and One-

Shot Processing options. This value determines the

length of the delay in the change from the off state to

the on state. To change the value, click the

button

to the right of the time value to be changed and enter

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