Interface Specification - Casio UP-400 Service Manual

1-3. INTERFACE SPECIFICATION

1-3-1. RS-232C SPECIFI CATION
Data transmission:
Synchronization:
Handshaking:
Signal levels:
Baud rate:
Data word length:
Parity Settings:
Stop bits:
Connector (printer side):
Notes: *The data word length, baud rate, and parity depend on the DIP switch settings. (Refer to
5.SETTING & CHECKING THE DIP SWITCHES.)
1-3-2. RS-232C INTERFACE CONNECTION EXAMPLE
HOST SIDE
(DTE ex.8251)
TxD
RxD
DTR
DSR
RTS
CTS
GND
1-3-3. LAN CONNECTOR
PIN
1
2
3
4
5
6
7
8
1-3-4. POWER SUPPLY CONNECTOR
The connector is connected the printer to an external power source.
CONNECTOR MODEL:
PIN
1
2
3
shell
Serial. EIA RS232C compliant
Asynchronous
DTR/DSR or XON/XOFF control (*)
MARK = -3 to -15V:
SPACE = +3 to +15V:
4800, 9600, 19200, 38400 bps (*)
8 bits, 7 bits (*)
None, even, odd (*)
1 or more
Male DSUB-9 pin connector
PRINTER SIDE
(Pin No.)
RxD (2)
TxD (3)
DSR (6)
DTR (4)
GND (5)
DESCRIPTION
TX+
TX-
RX+
Isolated GND
Isolated GND
RX-
Isolated GND
Isolated GND
SIGNAL
+24V
GND
NC
FG
– 2 –
Logic "1"/OFF
Logic "0"/ON
8 1
3
1
2
Shell