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Adapter for PluX22- and 21MTC-Interface
2. Operation overview
The adapter is used to upgrade vehicles with a PluX or MTC interface interface. There is a 22-
pole socket soldered on to the adapter PCB which is used to insert the plug connector of the
decoder-sided PluX interface. In order to connect the adapter to the the decoder-sided MTC
interface, the extra 22-pole plug connector has to be inserted into the adapter PCB.
2.1. Background information
Standard
Number of pins
Plug connector
Socket
PluX interfaces for different gauges
PluX-interfaces have 12, 16 or 22 connector pins and that way are suitable to be mounted in
vehicles of different gauges (or with varying space requirements). The assignment of the
different versions allows to insert a plug connector with 12 or 16 connector pins into a socket
with a larger number of connections.
Index-pin
For both types of interfaces the position of an index-pin which should not be used has been
defined. By means of the index-pin you can distinguish the direction for inserting the plug
connector into the socket. At the position of the plug connector in question the pin should be
removed.
2.2. Mounting versions
The (PluX- or MTC-) vehicle decoder can be inserted as well from the top as from the bottom
into the adapter PCB. The assignment of the PCB´s contacts depends on the direction of
inserting the decoder.
4 | Operation overview
PluX interfaces
NEM 658 / RCN-122
12, 16 or 22
on the decoder
in the vehicle
tams elektronik
MTC interfaces
NEM 660 / RCN-121
22
in the vehicle
on the decoder
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