Confidential
GS r n
[Name] | Transmit status |
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[Format] | ASCII | GS | r | n |
| Hex | 1D | 72 | n |
| Decimal | 29 | 114 | n |
[Range] | n = 1, 2, 49, 50 |
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[Description] Transmits the status specified by n as follows:
n | Function |
1, 49 | Transmits paper sensor status |
2, 50 | Transmits drawer |
[Details] | • When using a serial interface |
| When DTR/DSR control is selected, the printer transmits only 1 byte after confirming the host |
| is ready to receive data (DSR signal is SPACE). If the host computer is not ready to receive |
| data (DSR signal is MARK), the printer waits until the host is ready. |
| When XON/XOFF control is selected, the printer transmits only 1 byte without confirming the |
| condition of the DSR signal. |
| • This command is executed when the data in the receive buffer is developed. Therefore, |
| there may be a time lag between receiving this command and transmitting the status, |
| depending on the receive buffer status. |
| • When Auto Status Back (ASB) is enabled using GS a, the status transmitted by GS r and the |
| ASB status must be differentiated using the table in Appendix G. |
| • The status types to be transmitted are shown below: |
Paper sensor status (n = 1, 49):
Bit | Off/On | Hex | Decimal | Status for ASB |
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0, 1 | Off | 00 | 0 | Paper roll | paper adequate. | ||
| On | 03 | 3 | Paper roll | paper near end. | ||
2, 3 | Off | 00 | 0 | Paper roll end sensor: | paper adequate. | ||
| On | (0C) | (12) | Paper roll end sensor: | paper near end. | ||
4 | Off | 00 | 0 | Not used. | Fixed to Off. |
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5, 6 | - | - | - | Undefined. |
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7 | Off | 00 | 0 | Not used. | Fixed to Off. |
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Bits 2 and 3: When the paper end sensor detects a paper end, the printer goes offline and does not execute this command. Therefore, bits 2 and 3 do not transmit the status of paper end.
EPSON | TITLE |
| SHEET | NO. |
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| REVISION |
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| Specification |
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| NEXT | SHEET | ||
| (STANDARD) | B | |||
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| 142 | 141 |