TECHNICAL MANUAL
2. Configuration
2.1 Interface
2.1.1 RS-232 serial interface
2.1.2 Specifications
Data transmission:
Serial
Synchronization:
Asynchronous
Handshaking:
DTR/DSR or XON/XOFF control
Signal levels:
MARK= -3 to
–
15V:
Logic
“
1
”
SPACE= +3 to +15V: Logic
“
0
”
Baud rage:
4800, 9600, 19200, 38400 bps
Data word length:
7 or 8 bits
Parity Settings:
None, even, odd
Stop bits:
1 or more
Connector (printer side): Female DSUB-25 pin connector
NOTE:
The data word length, baud rate, and parity depend on the
DIPswitch settings.
2.1.3 Switching between on-line and off-line
The printer does not have an on-line/off-line switch.
The printer goes off-line:
• Between when the power is turned on (including reset using the
interface) and when the printer is ready to receive data.
• During the self-test.
• When the cover is open.
• During paper feeding using the paper feed button.
• When the printer stops printing due to a paper-end (in cases when
an empty paper supply is detected by either paper roll end detector or
the paper roll near-end detector with a printing halt feature by
ESC c4).
• During macro executing stand by status.
• When a temporary abnormality occurs in the power supply voltage.
• When an error has occurred.
2.1.4 Interface connector terminal assignments and signal functions
PIN
SIGNAL
I/O
DESCRIPTION
2
TXD
-
Printer transmit data line RS-232C level
3
RXD
-
Printer receive data line RS-232C level
4, 20
DTR
Output
Printer handshake to host line RS-232C level
6
DSR
Input
Data Send Ready
1,7
GND
-
System Ground
TITLE : WTP-100
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