iDP3310 User's Manual
7.3Input and Output Signals
7.3.1Input and Output Signals
(1)RD
Serial receiving data signal. On occurrence of framing error, overrun error, or parity error, the data is canceled.
(2)DTR
When this signal is READY, write data or a command. When they are written in BUSY, overrun error is occurred and data is ignored. Even during printing, data can be loaded in the input buffer. Further, BUSY can take place on supply of power, during test printing, during
(3)TD
If a command is received, which requests the printer condition or printer status, the corresponding
(4)DSR
If this signal is a Space, the data will be sent from the printer side. Note that if this signal is a Mark when a request to send command is executed, the printer will wait until the signal becomes a Space.
(5)FG
This is a Frame Ground.
(6)GND
This is a common ground on the circuit.
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