External Interfaces DescriptionQuick Reference Guide 7RS232 PortThe DLR-PR001-XX RS232 port is available on a DB9connector, the pinout is the following:Figure 5. RS232 port DB9 socket connector pinoutNOTEIt is strongly recommended to use only the Dat-alogic power supply AC/DC adapter 24Vdc out-put voltage.Pin # Signal Description1 - Not connected2 TX TX output3 RX RX input4 - Not connected5 GND Ground6 - Not connected7 CTS Clear to Send8 RTS Req. to send9 - Not connectedShell Ext. shell conn. To GND