Oki MICROLINE 385/6 Handbook

Serial Interfacing (RS-232C)To construct a cable for an RS-232C serial configuration, you will need:o DB25P equivalent 25-pin plug, shell equivalent to DB-C2-J9.• Beldon (or equivalent) SHIELDED cable with twisted pair conductors. Mand CSA approved. The cable MUST be shielded.• The printer has a 25-pin DB-255 receptacle.Pin DescriptionPin No. Signal Symbol Direction Description1 Frame ground FG — Connected to the printer(frame ground).2 Transmitted data TD From printer. Serial data signal transifrom printer.3 Received data RD To printer. Serial data signal recei\printer.4(Note 1)Request to send RTS From printer. Signal to indicate that thprinter is not ready for rfdata in Ready/Busy pro!6(Note 2)Data set ready DSR To printer. Signal to notify printer thtransmitter is ready fortransmission.Printer receives data aftconfirming the signal as7 Signal ground SG — Signal ground.11(Note 1)Supervisory senddataSSD From printer. Signal to indicate the priis not ready for receivingReady/Busy protocol.20(Note 1)Data terminal ready DTR From printer. Signal to indicate that thprinter is not ready for redata in Ready/Busy prot5,8 to 10,12 to 1921 to 25— — — Unused.Notes: 1 SSD signal output can be selected between pins 4, 11, 20 by menu.2 DSR signal valid/invalid can be set by menu.