AMT Datasouth Documax 5380 - Manual (Page 35)

- 35 -
When the DTR is low level, the printer is BUSY, it cannot receive the data from
HOST. DTR is low level in the following conditions:

The printer is offline.

The data buffer of the printer is smaller than limited value.

The printer has an error.
X-ON/X-OFF Protocol ~
Send the X-ON (11H) code to the HOST from the printer through TXD, which
indicates the printer is FREE and can receive data from HOST. In the situation
where the printer buffer area is larger than limited value, the below two conditions
can make the printer send X-ON code:

The printer becomes FREE from BUSY state.

The printer becomes ONLINE from OFFLINE state.
Send the X-OFF (13H) code to the HOST from the printer through TXD, which
indicates the printer is BUSY and cannot receive data from HOST. In the
following five conditions, the printer sends X-OFF code to printer:

The printer becomes BUSY from FREE state.

The printer becomes OFFLINE from ONLINE state.

The printer buffer is smaller than limited value.

The printer has an error.

The printer is out of paper.
Serial Specification
Serial data consists of Original bit (1 bit) + data bit (8 bits) + check bit (1 bit) +
stop bit (1 bit).
Ethernet interface
1.
10/100 Base-T:
Stop bit
Data bit
Original bit
D1 D2 D3 D4 D5 D6 D7 D8 Check bit