====== Using RS-485 ======
COM1 can be used as either RS-232 or RS-485.  To use RS-485 make the necessary connections to the green terminal block, and select RS-485 with the dip switch as shown below.

{{:cuwin:rs485pinout.svg|}}

To select RS-485, set dip switch 1 to OFF.  The other dip switches can be used to control RS-485 network termination and bias pullup resistors.

{{:cuwin:rs485selection.svg|}}