INSTALLATIONINPPT01 SWITCH SETTINGS3 - 2 I-E96-624A®operating options. The CPU board has three dipswitches thatset the module operating characteristics. These switches pro-vide the means of establishing the type of control, serial portcommunication rate, and loop address. Figure 3-1 shows thedipswitch locations on the CPU board.Option Switch (U72)U72 is an eight position dipswitch that determines the operat-ing options of the module. Table 3-1 lists the U72 option set-tings. Record the U72 settings in the space provided. Whensetting switches, 0 = Closed (on) and 1 = Open (off).Figure 3-1. Switch Locations on the PPT (CPU board)T00387AP1P2P3STOP SW2OPTIONSWITCHBAUD RATESWITCHJUMPERSJ1, J2, J3DIAGNOSTICSSWITCHU72 U73 U75RESET SW1 1 2 3 4OPEN5 6 7 8 1 2 3 4OPEN5 6 7 8 1 2 3 4OPEN5J1 J2 J3Table 3-1. Option Switch (U72) SettingsPosition Setting Function UserSetting1 01ROM checksumming enabledROM checksumming disabled2 01RS-232-C port in DCE mode (direct connections)RS-232-C port in DTE mode (modem connections)3 01Equipment select output de-energizedEquipment select output energized 14 01Port 1 option interface communicationPort 1 utility option 25 01Interface ID local 3Interface ID remote6 01Interface mode two-way control4Interface mode one-way control
