Casio QT 6600 Reference Manual - Page 119
Online interface
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3-5-2-2. Online interface Only the RS-232C COM 1 port can be connected with a modem or a personal computer. 1) Specification of RS-232C COM 1 port Communication method: Half duplex communication Configuration of connection: Point-to point Line type: Public lines / exclusive lines Starting method: Center (host computer) based start up Protocol: Async. Communication speed: 2400 / 4800 / 9600 / 19200 / 38400 / 57600 / 115200 bps Error control: CRC-128 or CRC-1024 Text length: 128 or 1024 bytes 2) The cable diagram between the terminal and MODEM 3) The cable diagram between the terminal and PC Terminal (COM 1) Pin Signal No. name 3 SD/TDX 2 RD/RXD 7 RS/RTS 8 CS/CTS 1 CD/DCD 4 ER/DTR 6 DR/DSR 9 CI/RI 5 GND MODEM Signal Pin name No. SD 2 RD 3 RS 4 CS 5 CD 8 ER 20 DR 6 CI 22 GND 7 (DSUB25) Terminal (COM 1) Pin Signal No. name 3 SD/TDX 2 RD/RXD 7 RS/RTS 8 CS/CTS 1 CD/DCD 4 ER/DTR 6 DR/DSR 9 CI/RI 5 GND PC Signal Pin Pin name No. No. SD 3 2 RD 2 3 RS 7 4 CS 8 5 CD 1 8 ER 4 20 DR 6 6 CI 22 GND 5 7 (DSUB25) (DSUB9) QT-6600 Reference Manual R-119