
Rev. 1.03
This signal indicates whether the host computer can
receive data. (H/W flow control)
1) MARK(Logic1) : The host can receive a data.
2) SPACE(Logic0) : The host can not receive a data.
3) The printer transmits a data to the host, after
confirming this signal.
4) When XON/XOFF flow control is selected, the
printer does not check this signal.
This signal indicates whether the printer is busy. (H/W
flow control)
1) MARK(Logic1) : The printer is busy.
2) SPACE(Logic0) : The printer is not busy.
3) The host transmits a data to the printer, after
confirming this signal.
4) When XON/XOFF flow control is selected, the host
does not check this signal.
1-2-1-2 Dual Serial Interface
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