RS232C
| Signal |
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Pin# | Name | Type | Description |
1 | RXD | input | Receive Data |
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2 | TXD | output | Transmit Data |
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3 | CTS | input | Clear To Send from host |
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4 | RTS | output | Request To Send |
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| set high when printer is ready |
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| to accept a command or data |
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5 | GND |
| Ground |
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6 | NC |
| No Connect |
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7 | DSR | input | Data Set Ready |
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| low to high transition turns |
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| printer on, high to low transi- |
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| tion turns printer off (if en- |
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| abled) |
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8 | DTR | output | Data Terminal Ready |
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| set high when printer is on. |
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| Set to battery voltage |
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| for “S” versions( compatible |
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| with Symbol™ PIM) |
USB (QL Plus Series only)
| Signal |
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Pin# | Name | Type | Description |
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1 | VBUS | - | USB Bus Power |
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2 | USB - | I/O signals | |
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3 | USB + | I/O signals | |
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4 | USB_ID | - | Identifies A/B connector |
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5 | Return |
| Ground |
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67
QL Series User Guide