Appendixes
2 Specifications
Interface
The printer is connected to a computer and prints labels according to the command from the computer. Two systems of interface connection to a computer are shown below.
1.Serial interface: RS-232C
System | Asynchronous serial interface |
|
|
| |
|
|
|
Connector | DSUB |
|
|
|
|
Handshaking | XON/XOFF and CTS/DTR |
|
|
|
|
Receive buffer | 32K bytes |
|
size | Receiving data stops when the receive buffer reaches 2K bytes | |
| ||
| and resumes receiving data when the receive buffer reaches | |
| 4K bytes |
|
|
|
|
Baud rate | 300, 600, 1200, 2400, 4800, 9600, 19200, 38400 | bps |
|
|
|
Bit length | 7- or |
|
|
|
|
Stop bit | Fixed |
|
| When printer is receiving data, stop bit is fixed at 1, and when | |
| printer is transmitting data, stop bit is fixed at 2. But computer | |
| can transmit or receive data, regardless of stop bit at 1 | or 2 |
|
|
|
Parity | No |
|
|
|
|
2. Parallel interface: In conformity with Centronics
System | |
|
|
Connector | |
|
|
Synchronous system | Strobe pulse |
|
|
Handshaking | ACKNLG and BUSY signals |
|
|
Signal level | TTL |
|
|
65