finder 19 Series Manual - Página 6

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1.5 Detailed description of the communication objects

The DPT_Channel X

Set ON/OFF message is relayed to the device in order to define the output status of

the channel X. The status of the relay on the X Channel switches mutually depending by the value assigned to

the PAR_Contact Type parameter. Moreover, the channel switching depends on the channel function set by

the PAR_Function parameter.

1.5.1.1

Function Set On/Off example

When the PAR_Function parameter is set to

DPT_Channel X - Status message is sent on the bus with the value of the new status of the

channel, as well as the DPT_Channel X - Status Inverted message (not shown), which

represents the negation.

1.5.1.2

Function Stairs light switching example

When the PAR_Function

channel switches from the OFF to ON status on receipt of DPT_Channel X

message. The resulting switching of the relay turn on the lights. The light timer remains locked

until the DPT_Channel X Set ON/OFF = Off message is received.

After the release of the button (instant t0, t'0 and t''0) the device starts the light timer that will

expire after the interval indicated by the PAR_Stairs Light Time (s) parameter. If the button is

pressed when lights are ON, the timer is stopped and subsequent release of the button

involves reset of the light timer (e.g. instant t'0). At the end of the turn-on period the device

switches the channel relay to OFF state, turning off the lights and sends the DPT_Channel X -

Status = Off message. In the figure are not shown the DPT_Channel X - Status Inverted

messages that are sent as well from the device in correspondence with the status changing.

FINDER SpA

Ver. 2018

Set On/Off . At each switching the

Stairs light Each time the button is pressed, the

KNX Actuator 19.6K

Set ON/OFF = On