Note

All interface conditions are based on TTL level. Both the rise and fall of each signal must be less than 0.2 microseconds.

Data transfer must be carried out by observing the ACKNLG or BUSY signal. (Data transfer to this printer can be carried out only after the receipt of the ACKNLG signal or when the level of the BUSY signal is LOW.)

The column heading “Direction” refers to the direction of the signal flow as viewed from the printer.

“Return” denotes the twisted-pair return to be connected at signal ground level. For the interface wiring, be sure to use a twisted-pair cable for each signal and to complete the connection on the return side.

Serial interface

The DFX-5000+ built-in serial interface is an RS-232C asynchronous interface with the following characteristics.

Data format:1 start bit

 

Data word length: 8 bits

 

Odd, even, or no parity

 

1 or more stop bit
Signal level:Mark logical “1” (-3 V to -27 V)

 

Space logical “0” (+3 V to +27 V)
Handshaking:Handshaking by DTR signal or Xon/Xoff.
Bit rate:300, 12OO, 9600, 19200 bps
Connector plug:EIA 25-pin connector
Technical Specifications A-13