Interface Information
Serial Options
The serial options for the computer and the printer must match. Use the printer control panel, the computer operating system, or your software to change options specified as “selectable.”
Transmission mode: | Asynchronous, full duplex | |
Speed: | 600, 1200, 2400, 4800, 9600, or 19200 baud (selectable) | |
Data bits: | 7 or 8 bits (selectable) | |
Parity bit: | Even, odd, none, or ignore (selectable) | |
Start bit: | 1 | bit |
Stop bit: | 1 | bit |
Buffer control: | XON/XOFF (DC1/DC3) or DTR (Data Terminal Ready) | |
| (selectable) | |
Buffer size: | 2K, 8K, 16K, 32K, or 64K bytes (selectable) | |
Cable Wiring
Use a
| Host |
| Cable |
|
| Printer |
|
Ready Out | (Pin 1) |
|
|
|
| (Pin 6) | Ready In |
|
| ||||||
Transmit Data + | (Pin 2) |
|
|
|
| (Pin 5) | Receive Data + |
|
|
| |||||
Transmit Data – | # (Pin 3) |
|
|
|
| (Pin 4) | Receive Data – |
|
|
|
| ||||
Receive Data – | (Pin 4) |
|
|
|
| (Pin 3) # | Transmit Data – |
Receive Data + | (Pin 5) |
|
|
|
| (Pin 2) | Transmit Data + |
|
|
|
| ||||
Ready In | (Pin 6) |
|
|
|
| (Pin 1) | Ready Out |
| # indicates grounding. |
|
| ||||
|
|
|
|
|
|
|
Buffer Control
Buffer control is a communication protocol used by the computer terminal and the printer to secure data transmission between the two devices. The buffer control ensures that the computer does not send information to the printer faster than the information can be processed in the printer. By telling the computer when the printer can receive data, the buffer control prevents the printer’s buffer from overflowing.
This printer offers a choice of two different buffer controls for connection to a variety of computers: XON/XOFF and DTR. If you computer documentation does not recommend a particular buffer control, try DTR. The following table describes the buffer control.
