Setting the Interface Functions: RS-232C Serial Interface
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The RS-232C Serial interface of your plotter conforms to the RS-232C Standard
of Electronic Industries Association (EIA). This serial interface performs the serial
transfer of digital binary data, control signals and SYNC signals.
Pin Assignment
of the Serial Con-
nector
The pin assignment of the serial interface connector is described in the table
below.
Standard CCITT V.24, EIA RS-232C, JIS X5101
Synchronization Asynchronous start-stop
Transfer Rate 19200 bits/s max.
Stop Bit 2 s t o p bits
Parity Even, odd, none
Character length 7 or 8 bits
Table 11: RS232-C Electrical Characteristics
RD, SD
(Negative Logic)
RS, CD, DR, ER
(Positive Logic)
Input voltage level +5V to +12V
-5V to -12V
Logical “0” “ON”
Logical “1” “OFF”
Output voltage level +5V to +8V
-5V to -8V
Logical “0” “ON”
Logical “1” “OFF”
Pin Signal Name Pin Signal Name
1 GND (Frame) 14 Not used
2 SD (TxD) 15 Not used
3 RD (TxD) 16 Not used
4 RS (RTS) 17 Not used
5 CS (CTS) 18 Not used
6 DR (DSR) 19 Not used
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