Oki OKIPOS408II OKIPOS 408II Programmer s Technical Reference - Page 234
INTERFACE CONFIGURATION, RS-232 Serial Interface, Specifications Conforming to RS-232
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1. INTERFACE CONFIGURATION 1-1 RS-232 Serial Interface 1-1-1 Specifications (Conforming to RS-232) Rating: Synch method: Handshake: Baud rates: Bit length: Parity: Parity bit: Stop bit: Signal polarity: RS-232C Start-Stop synchronization method DTR mode 4800, 9600, 19200, 38400 bps (Set by DIP switches) 7, 8 bits (Set by DIP switches) Yes/No (Set by DIP switches) Odd/even (Set by DIP switches) 1 bit (Fixed) Mark = logic 1 (-3 V to -15 V) Space = logic 0 (+3 V to +15 V) 1-1-2 Signal Array and Explanations According to Interface Connector Pin Pin No. Signal Name Signal Direction 1 FG - 2 TXD OUT 3 RXD IN 4 RTS OUT Frame ground Transmission Data Reception Data Same as DTR Function 5 6 7 8-19 20 N.C DSR SG N.C DTR 21-24 25 N.C /INIT IN OUT IN Not Used Not Used Signal ground Not Used Data terminal ready signal (SPACE: Printer ready to receive) 1) For DTR Mode SPACE when printer is ready to receive. 2) For XON/XOFF Mode Always a space excluding the following conditions. 1. Time until communications are ready and after reset. 2. When test printing Not Used Not Used _____ STAR Page Mode Command Specifications 1-1