22 GE Information D.20 RIO - HARDWARE USER’S MANUALCONFIGURING DEVICE OPTIONS CHAPTER 2: INSTALLING THE D.20 RIOFigure 2: Configuration switches and jumpersSW1: D.20 channel 1 to D.20 link port BThis switch controls how the hardware D.20 link port B pins 6 and 7 are connected to D.20channel 1.The default setting of SW1 is both positions OFF (D.20 channel 1 on port B pins 6 and 7 notconnected).SW3: D.20 channel 2 to D.20 link port BThis switch controls how the hardware D.20 link port B pins 2 and 3 are connected to D.20channel 2.The default setting of SW3 is both positions ON (D.20 channel 2 on port B pins 1 and 2connected).D.20 RIO printed circuit boardPowerD.20 BD.20 ARS-232SW3SW1SW2 JP1EthernetEthernetSystem LEDsON › ON ›ON ›1 3 5 7Front ›‹ RearConnection is enabled Connection is disabled1 2ON1 2ONConnection is enabled Connection is disabled1 2ON1 2ON
