Serial Line Terminations; Installing The Housing; Fixing With Bracket - Videotec NTC Manuel D'instructions

6.4 Serial line terminations

The board has two DIP switches used to configure the
serial line terminations (120 Ohm) (Fig. 4, page 8).
Every peripheral that is situated at the end of a line
must be terminated using the appropriate dip-switch
in order to prevent signal reflection and distortion.
Dip-switches 7 and 8 terminate serial lines RS-485-1
and RS-485-2 respectively.
DIP switches 1 and 2 terminate the RS-422-RX and
RX-422-TX serial lines, respectively.
RS-422 SERIAL LINE TERMINATIONS
DIP 1 DIP 2 Description
ON - RS-422-RX, Line terminated
OFF - RS-422-RX, Line not terminated
- ON RS-422-TX, Line terminated
- OFF RS-422-TX, Line not terminated
Tab. 3
10

6.5 Installing the housing

Before closing the housing, be sure to have rightly
fitted the internal slide according to the type of
installation.

6.5.1 Fixing with bracket

The fixing base of the housing must be positioned
facing downwards.
Fig. 8 Fixing with bracket.
MNVCNTC_1637_EN