併列介面
Image
Specifications
| Item |
Specification |
| Data input method |
8-bit parallel (conforms to Centronics) |
| Hand shake |
STROBE, BUSY, and ACK |
Connector Pin Assignment
| Pin NO. |
Signal |
IN/OUT |
Function |
| 1 |
STROBE |
IN |
Data strobe |
| 2~9 |
DATAO~7 |
IN |
Carries input data 1 when high and 0 when low |
| 10 |
ACK |
OUT |
Indicates that the printer cannot accept any data |
| 11 |
BUSY |
OUT |
Indicates that the printer cannot accept any data |
| 12 |
PE |
OUT |
Indicates that there is no paper |
| 13 |
SLCT |
OUT |
Indicates that the printer is ON LINE |
| 14 |
AUTO LF |
IN |
Enters the automatic carriage return mode when low at power on |
| 15 |
NC |
- |
No connection |
| 16 |
GND |
- |
Ground |
| 17 |
FG |
- |
Frame ground |
| 18 |
NC |
- |
No connection |
| 19~30 |
GND |
- |
Ground for twist pair return signal |
| 31 |
INIT |
IN |
Initialize |
| 32 |
ERROR |
OUT |
Indicates an error has occurred |
| 33 |
GND |
- |
Ground |
| 34 |
NC |
- |
No connection |
| 35,36 |
+5V |
- |
Normally, pulled at 4.7k when high |
Serial
Specifications
| Item |
Specification |
| Synchronous method |
Asynchronous |
| Baud rate |
75,110,150,300,600,1200,2400,4800,9600, or 19200(bps) |
| Start bit |
1 bit |
| Data bit |
7 bit or 8 bit |
| Parity bit |
Odd, Even or None |
| Stop bit |
1 bit |
| Data input method |
RS-232-C |
| Busy controller |
H / W BUSY (mode) X-ON / X-OFF (mode) |
Connector Pin Assignment
| Pin# |
Signal |
IN/OUT |
Function |
| 1 |
NC |
- |
No connection |
| 2 |
TxD |
OUT |
Out put XON /OFF |
| 3 |
RxD |
IN |
Recieves data from host device |
| 4 |
NC |
- |
Connected to pin6 |
| 5 |
SG |
- |
Shgnal ground |
| 6 |
NC |
- |
Connected to pin4 |
| 7 |
NC |
- |
No connection |
| 8 |
RTS |
OUT |
Data transmission request signal |
| 9 |
NC |
- |
No connection |
Connector: 9-pin D-sub
Connector attached:RDED-9SE-LN(05)