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2 CONFIGURATION AND INSTALLATION
2.1
Interface Specifications
2.1.1
RS232 Serial Interface
2.1.1.1 Specifications
Data Transmission: Serial
Synchronization:
Asynchronous
Handshaking:
RTS/CTS or DTR/DSR
Signal Levels: MARK = -3 to -15 V; Logic "1"/ OFF SPACE = +3
to +15 V;
Baud Rate:
115200,
38400, 19200, 9600bps
Data Word Length: 8 bits
Parity:
None
Stop Bits: 1 bit or more
Connector (the side on the printer ):
NOTE: Handshaking, Baud rate and Parity decided by DIP Switch 1 setting. (refer to 3.3.1) the stop bits
fixed on 1.
Switching between online and offline:
The printer have not the online and offline switch.
The printer goes offline:
1) Between when the power is turned on (includes reset using the interface) and when the printer is get ready
to receive the data.
2)
During the self-test.
3)
When the cover is open.
4)
During paper feeding pushing the paper feed button.
5)
Stop printing when out of paper.
6)
During macro executing standby status.
7)
When an error have occurred.
2.1.1.2 Interface Pin Signal Definition
Interface connector terminal assignments and signal functions description as the following table:
Signal assignments and functions
Pin
Signal
Signal
NO.
Name
Direction
2
RXD
Input
3
TXD
Output
PRINTEX P250 User Manual
or XON/XOFF control
Logic "0"/ ON
D-SUB25 male
Function
Receive data
Receive data
4
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