Setup and Connections ESERV-1xT Serial Servers9 ESERV-1xT (Rev. 1210)CONNECTING THE ESERV -11TThe ESERV-11T has one serial connection that supports RS-232, RS-422 and RS-485 (2- and 4-wire). The unit hastwo connectors: a DB-9M connector and a 5-position terminal block.If you select RS-232 mode when you configure the serial server, you must connect the serial device to the serialserver via a serial cable. The ESERV-11T is a DTE. If the serial device is a DTE, use a null modem (cross-over)cable. If the serial device is a DCE, use a straight-through cable.If you select RS-422 mode, RS-485 2-wire mode, or RS-485 4-wire mode when you configure the serial server, youmust connect the serial device appropriately, via the 5-position terminal block.Note: Refer to Appendix D for connector pinout information.Figure 10. ESERV-11T Connections
