| Signal |
|
|
Pin# | Name | Type | Description |
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|
|
|
1 | VBUS | - | USB Bus Power |
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|
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2 | USB - | I/O signals | |
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3 | USB + | I/O signals | |
|
|
|
|
4 | USB_ID | - | Identifies A/B connector |
|
|
|
|
5 | Return | - | Ground |
|
|
|
|
Signal
Pin# | Name | Type | Description |
1 | NC | no connect |
|
|
|
|
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2 | NC | no connect |
|
|
|
|
|
3 | RXD | input | Receive Data |
|
|
|
|
4 | TXD | output | Transmit Data |
|
|
|
|
5 | DTR | output | Data Terminal Ready |
|
|
| set high when printer is on. |
6 | GND |
| Ground |
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|
|
|
7 | DSR | input | Data Set Ready |
|
|
| low to high transition turns |
|
|
| printer on, high to low transi- |
|
|
| tion turns printer off (if en- |
|
|
| abled) |
|
|
|
|
8 | RTS | output | Request To Send |
|
|
| set high when printer is ready |
|
|
| to accept a command or data |
|
|
|
|
9 | CTS | input | Clear To Send from host |
|
|
|
|
10 | NC | no connect |
|
|
|
|
|
48
RW 420 User Guide