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Pin No. | Signal name | Direction | Function |
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| 1) DTR/DSR Communication Mode |
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| This signal indicates whether the printer is busy. |
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| SPACE indicates that the printer is ready to receive |
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| data, and MARK indicates that the printer is busy. |
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| The busy condition can be changed by using DIP |
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| SW |
Printer status | DIP SW | ||
OFF | ON | ||
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1.During the period from when |
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the power is turned on (includ- | BUSY | BUSY | |
ing resetting using the interface) | |||
to when the printer is ready to |
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receive data. |
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2.During the self printing. | BUSY | BUSY | |
3.When the cover is open. | — | BUSY | |
4.When the printer stops printing | — | BUSY | |
due to a | |||
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5.During macro executing standby | — | BUSY | |
status. | |||
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6.When an error has occurred. | — | BUSY | |
7.Whenthereceivebufferbecomes- | BUSY | BUSY | |
full. | |||
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2)
Always space, except during following condi- tions:
•Period between reset and communication ena- bled
•During self printing
21~24 | N/C |
| Not used |
25 | INIT | IN | Status of this signal is not checked. |
13 
1
25
14
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