Each module output signal is RS 485, for each output there is therefore a direct signal (+) and its complement (-). The outputs are TTL type current extraction compatible. The 5 V insulated voltage is only available, if necessary, to supply translator input and output. The 0 V is common to inputs and outputs. 5 V must only be used with translators with open collector outputs and TTL type inputs (5 V insulated not provided by the translator).

The proposed type of connection is direct wiring by soldering onto the connector: the TSX CAP S15 kit comprising a SUB-D connector and its protective cover.