Bridge for line resistor on RS485 card option
The connection in network by interface RS485 necessitates to
close the communication line in its extremities by means of a
resistor (Rt) of 120 Ω. The card
RS485 of the indicators C.A
2150 upright one a resistor incorporated, that will be “ active ”
while establishing the bridge J1 by means of the foreseen rider
to this effect.
Otherwise says, preserve the bridge on the last indicator of the
network, and
to eliminate it on all the others. Quoted master, it
will suit to consult the documentation of the builder of the
equipment (computer, automat, ...) for the connection of the
signal and resistor can vary according to the card type.
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