 Acer File Extensions |
Epson 8145 (Type A, 2KB)
The 8145 serial interface is an optional interface for incorporationinto the Epson range of printers, and is designed for printing data out from a computer equipped with a serial interface. X-ON/X-OFF is not supported by this interface.
| Switch No. | Function | On | Off |
|---|---|---|---|
| SW1-1 | Bit rate selection | See table 1 | |
| SW1-2 | Bit rate selection | See table 1 | |
| SW1-3 | Bit rate selection | See table 1 | |
| SW1-4 | Bit rate selection | See table 1 | |
| SW1-5 | Data entry ready flag ctl | See table 2 | |
| SW1-6 | Data entry ready flag ctl | See table 2 | |
| SW1-7 | Parity check | Disable | Enable |
| SW1-8 | IF board enable/disable | Even | Odd |
| Switch | Function |
|---|---|
| SW2-1 | ON: 7-bit word length |
| SW2-1 | OFF: 8-bit word length |
| SW2-2 | ON: In the state that serial data entry is disabled: Reverse |
| SW2-2 | OFF: In the state that serial data entry is disabled: Reverse |
| SW2-3 | ON: channel=SPACE(RS-232C) TTY-TXD=MARK(Current Loop) |
| SW2-3 | OFF: channel=MARK(RS-232C) TTY-TXD=SPACE(Current Loop) |
| SW2-4 | ON: Reverse channel valid |
| SW2-4 | OFF: Reverse channel fixed |
Warning : If SW2-2 and SW2-3 are set to ON simultaneously, the printer may be damaged.
| Jumper | Function |
|---|---|
| J1 | ON: Pull up DSR and DCD to +12v via 4.7K-ohm resistor |
| J2 | ON: Input data: RS-232C level |
| J2 | OFF: Input data: Current loop |
| J3 | ON: level |
| J4 | ON: Pull up TTY-TXD to +12V via 470-ohm resistor. |
| J5 | ON: Connect TTY-TXD Return to signal ground |
| J6 | ON: Pull up TTY-RXD to +12V via 470-ohm resistor. |
| J7 | ON: Connect TTY-RXD Return to signal ground. |
Notes:
1. ON denotes the connection of the jumper, while OFF denotes the disconnection of the jumper.
2. Either RS-232C level or current loop level is selectable, but never both, simultaneously.
3. The serial interface is factory set to RS-232 level. To convert it to current loop level, cut the printed pattern between the through holes of J2 at the reverse side of the interface board and then connect J3 with a conductor.
Table 1
| Baud Rate | SW1-1 | SW1-2 | SW1-3 | SW1-4 |
|---|---|---|---|---|
| 75 | ON | ON | ON | ON |
| 110 | ON | ON | ON | OFF |
| 135 | ON | ON | OFF | ON |
| 150 | ON | ON | OFF | OFF |
| 200 | ON | OFF | ON | ON |
| 300 | ON | OFF | ON | OFF |
| 600 | ON | OFF | OFF | ON |
| 1,200 | ON | OFF | OFF | OFF |
| 1,800 | OFF | ON | ON | ON |
| 2,400 | OFF | ON | ON | OFF |
| 4,800 | OFF | ON | OFF | ON |
| 9,600 | OFF | ON | OFF | OFF |
| Self-test | ON | ON | ON | ON |
Table 2
| Flag Reset (bytes) | SW1-5 | SW1-6 |
|---|---|---|
| 152 | ON | ON |
| 288 | OFF | ON |
| 560 | ON | OFF |
| 1,936 | OFF | OFF |