Section 5: Interface Specifications
5.7 READY/BUSY
Ready / Busy is the hardware flow control method for the serial interface on the printer. Data received cannot be guaranteed, when print data (ESC+"A"~ESC+"Z") is sent from the host, under the following conditions:
1)When the printer is Offline
2)When an error has occurred in the printer
Pin Assignments
1) |
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Printer |
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FG | 1 |
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| 1 | FG | FG | 1 |
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SD | 2 | 3 | RD | SD | 2 | 2 | RD | ||||
RD | 3 | 2 | SD | RD | 3 | 3 | SD | ||||
RS | 4 | 5 | CS | RS | 4 | 8 | CS | ||||
CS | 5 | 4 | RS | CS | 5 | 7 | RS | ||||
DR | 6 | 20 | ER | DR | 6 | 4 | ER | ||||
SG | 7 |
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| 7 | SG | SG | 7 |
| 5 | SG | |
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ER | 20 | 6 | DR | ER | 20 | 6 | DR | ||||
When using Windows Hardware Control: |
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3) |
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Printer |
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FG | 1 | 1 | FG | FG | 1 |
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SD | 2 | 3 | RD | SD | 2 | 2 | RD | ||||
RD | 3 | 2 | SD | RD | 3 | 3 | SD | ||||
CS | 5 | 20 | ER | CS | 4 | 6 | DR | ||||
RS | 4 | 6 | DR | RS | 5 | 4 | ER | ||||
DR | 6 | 4 | RS | DR | 6 | 7 | RS | ||||
SG | 7 | 7 | SG | SG | 7 |
| 5 | SG | |||
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ER | 20 | 5 | CG | ER | 20 | 6 | CS | ||||
Interface Signals
Pin no. | Signal Type | Direction | Contents |
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1 | FG | - | Frame Ground |
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2 | SD | Output | Send Data |
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3 | RD | Input | Receive Data |
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4 | RS | Output | Request to Send |
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5 | CS | Input | Clear to Send |
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6 | DR | Input | Data Set Ready |
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7 | SG | - | Signal Ground |
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20 | ER | Output | Error |
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Page | GT Series Operator’s Manual |
