Oki MICROLINE 591Elite User Manual

Also see for Microline 590: Product update Maintenance manual

Contents

C – 5Serial Interfacing (RS-232C)To construct a cable for an RS-232C serial configuration, you will need:l DB25P equivalent 25-pin plug, shell equivalent to DB-C2-J9.l Beldon (or equivalent) SHIELDED cable with twisted pair conductors. Must beUL and CSA approved. The cable MUST be shielded.l The printer has a 25-pin DB-255 receptacle.Pin DescriptionPin Signal Symbol Direction Description1 Frame ground FG — Connected to the printer frame(frame ground).2 Transmitted TD From printer Serial data signal transmitteddata from printer.3 Received data RD To printer Serial data signal received byprinter.4* Request to send RTS From printer Signal to indicate that theprinter is not ready for receivingdata in Ready/Busy protocol.6** Data set ready DSR To printer Signal to notify printer thattransmitter is ready fortransmission. Printer receivesdata after confirming the signalas a HIGH.7 Signal ground SG — Signal ground.11* Supervisory SSD From printer Signal to indicate the printersend data is not ready for receiving datain Ready/Busy protocol.20* Data terminal DTR From printer Signal to indicate that theprinter is not ready for receivingdata in Ready/Busy protocol.Note: Pins 5, 8 to 10, 12 to 19, 21 to 25 are unused.Notes: * SSD signal output can be selected between 4,11,20 by menu.** DSR signal valid/invalid can be set by menu.+