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7. SERIAL INTERFACE
7.1Specifications
(1)Synchronous system: Asynchronous
(2)Baud rate: 150, 300, 600, 1,200, 2,400, 4,800, 9,600, or 19,200 bps (User selectable)
(3)Configuration of one word
•Start bit | : 1 bit |
•Data bits | : 7 or 8 bits (User selectable) |
•Parity bit | : Odd, even, or none (User selectable) |
•Stop bit | : 1 bit or more |
(4)Signal polarity
•Mark | = | Logic "1" | |
•Space | = | Logic "0" | (+3 V to +12 V) |
(5)Received data (RD signal)
•Mark = 1
•Space = 0
(6)Reception control (DTR signal)
•Mark | : Data transfer disabled |
•Space | : Data transfer enabled |
(7)Transmission control (TD signal) •Status transmission
= | Transmits "A"(41h) | |
= | Transmits "H"(48h) |
•Printer state transmission
Transmits the data indicating the
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