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CBM-230/231 User’s Manual
CITIZEN
30
7.3.4 Data Receiving Control
When DTR/DSR control has been selected, if the DTR signal is at SPACE, the data from the host side can be
received, but when at MARK, it cannot be received.
When DTR/DSR control has not been selected, the data from the host side can be received after transmitting
XON, but it cannot be received after transmitting XOFF.
7.3.5 Buffering
There are DTR and TD signals as control signals for data transfer to the input buffer.
(1) DTR signal (Refer to 7.3 1)
(2) TD signal (Refer to 7.3 1)