DS63001622.2.1 Main/Aux. Serial Interface and I/O ConnectorThe DS6300 master/slave model is equipped with a 25-pin male D-sub connector forconnection to the host computer, power supply and input/output signals.The DS6300 fieldbus models (Ethernet, DeviceNet, Profibus) adopt a 26-pin male connectorinstead of the 25-pin one.The details of the connector pins are indicated in the following table:1019118926 1412513Figure 21 - 26-pin Connector Figure 22 - 25-pin Connector25-pin/26-pin D-sub connector pinoutPin Name Function1 Shield Cable shield - internally connected by capacitor to the chassis20 RXAUX Receive data of auxiliary RS232 (referred to GND)21 TXAUX Transmit data of auxiliary RS232 (referred to GND)8 OUT 1+ Configurable digital output 1 - positive pin22 OUT 1- Configurable digital output 1 - negative pin11 OUT 2+ Configurable digital output 2 - positive pin12 OUT 2- Configurable digital output 2 - negative pin16 OUT 3A Configurable digital output 3 - polarity insensitive17 OUT 3B Configurable digital output 3 - polarity insensitive18 EXT_TRIG A External trigger (polarity insensitive)19 EXT_TRIG B External trigger (polarity insensitive)6 IN2A Input signal 2 (polarity insensitive)10 IN2B Input signal 2 (polarity insensitive)14 IN3A Input signal 3 (polarity insensitive)15 IN4A Input signal 4 (polarity insensitive)24 IN_REF Common reference of IN3 and IN4 (polarity insensitive)9,13 VS Supply voltage - positive pin24,25,26* GND Supply voltage - negative pinMain Interface Connector PinoutPin RS232 RS485 Full Duplex RS485 Half Duplex2 TX TX485+ RTX485+3 RX RX485+4 RTS TX485- RTX485-5 CTS RX485-7 GND_ISO GND_ISO GND_ISO* Pin 26 is only available for fieldbus models (Ethernet, DeviceNet, Profibus).