C.2. Serial
RS-422A interface
The serial interface was set to
In
In
☛The changing of the jumper connector should be carried out only by a Kyocera authorized dealer or Kyocera certified technician. Kyocera shall not be liable for damage due to improper changing of the jumper connector.
Interface Signals
The pins in the printer's
Table C.3. RS-422A Signal Pin Assignments
Pin | In/out | Signal | Description |
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1 | – | FG | Frame ground |
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3 | In | RDA | Receive data Inverted |
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7 | – | SG | Signal ground |
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9 | Out | SDA | Send data Inverted |
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10 | Out | SDB | Send data |
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11 | – | – | +5V DC |
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18 | In | RDB | Receive data |
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Overview of Signals (RS-422A)
FG - Frame Ground - (Pin 1)
This pin is connected directly to the printer frame.
SG - Signal Ground - (Pin 7)
All signals can transmit between the printer and the host computer to send each signals with a signal ground.
RDB - Receive Data - (Pin 18)
RDA - Receive Data Inverted - (Pin 3)
These pins carry asynchronous data sent from the computer to the printer. (differential input)
SDB - Send Data - (Pin 10)
SDA - Send Data Inverted - (Pin 9)
These pins carry asynchronous data sent from the printer to the computer. (differential output)
RS-422A interface voltage levels
The interface signal voltage levels conform with the EIA
SERIAL Connector
The connector marked "IOIOI"
