BIXOLON SRP-350plusIII - Manual (Page 11)

Rev. 1.03 - 11 -
SRP-350/352plusIII
Pin No. Signal Name Direction Function
Main Frame GND - Frame Ground
2 TXD Output Data Transmission
3 RXD Input Data Reception
6 DSR Input
This signal shows whether the host computer can
receive data (hardware flow control).
1) MARK (Logic 1): The host computer can receive
data.
2) SPACE (Logic 2): The host computer cannot
receive data.
3) After checking the signal in the printer, it
transmits data to the host.
4) When XON/XOFF flow control is selected, the
printer does not confirm this signal.
7 Signal GND - Signal Ground
20 DTR Output
This signal shows whether the printer works or not
(hardware flow control).
1) MARK (Logic 1): Printer is working.
2) SPACE (Logic 2): Printer is not working.
3) After checking the signal in the printer, it
transmits data to the host.
4) When XON/XOFF flow control is selected, the
printer does not confirm this signal.
Shield Frame GND - Frame Ground