Oce WP20 Operation Manual

Contents

Appendix C Host Computer InterfaceC-5Obtaining a Suitable RS-232C CableMake sure that the RS-232C cable is wired correctly. The cablemust be a null modem cable; that is, one in which pin 2 oneither end of the cable is connected to pin 3 on the other end.You cannot use a straight cable such as IBM communicationadapter cable type 1502067 unless you purchase a null modemadapter.Connecting the Printer to the ComputerCheck that the power of both the printer and the computer isswitched off.Discharge yourself of static electricity by touching ametal object such as a door knob.Remove the plastic cap from the printer’s RS-232Cinterface connector.Plug the printer end of the RS-232C interface cableinto the printer’s RS-232C connector and screw it inplace.Plug the other end of the cable into the computer’sRS-232C interface connector.Switch on the printer’s power.The printer’s RS-232C parameters are factory-set tothe following values:Baud rate=9600 bps, data bits (character length)=8bits, stop bits=1, parity=noneThe two RS-232C protocols are XON/XOFF andDTR. The printer performs both of themsimultaneously, using positive logic for DTR.If you are uncertain as to the printer’s currentparameter settings, you can reset them to the valueslisted above. SeeChanging Serial InterfaceParameters on page 1-43.Set the computer to the same parameters as theprinter. On many computers this can be done by set-ting DIP switches before the power is turned on. An-other method is as follows:With Windows 95/98/Me, make settings as follows:Click on the Start button in the Windows 95/98/MeTask Bar and align the cursor with Settings, thenclick on Control Panel from among the items dis-played.The control panel folder opens. Double click on Sys-tem.System Properties opens. Click on the Device Man-ager tab, then click on the COM port to be used.Click on the Properties button.The Properties sheet is displayed for the selectedCOM port. Click on the Port Settings tab and set theport properties.After setting the properties, click the OK button.RS-232C Cable Connection1234567123456