Fujitsu M304X Series Oem Manual page 78

6.2 ,Interface
This section explains the interface signal functions and physical
specifications.
6.2.1 Interface
The RS-232-C interface
0 and the negative voltage is logical 1. Table 6.1 lists the RS-232-C
interface signal lines and their functions.
S i g n a l
S i g n a l n a m e
1
Received Data
Transmitted
Data (TD)
Request to
Send (RTS)
Clear to Sendt-3 U
6 - 4
Signals
signal lines
negative
uses
Table 6.1 RS-232-C
Direction
i
IV
logic when the
interface signal
signal line
host.
signal line must be 1 (marking) when the
Received Line Signal Detector
signal line
and reports printer status to
signal line is 1 (marking) when the Request
to Send signal
When this signal
the host to send data or is transmitting data to
the host.
After this signal is turned on (0)
Send signal goes on CO):,
transmitting data.
Table 7.2.
Note: When the RTS
signal
above.
This signal is turned on wl~en the host confirms
that the RTS
be received.
L
7.2.
positive voltage
lines
receives serial data
line is logical 1.
transmits codes XON
is 0, the printer is
the printer begins
For operation details, see
line protocol is used, this
does not operate as
For
details, see Section 4.4.
is 0 and data from the printer can
For operation details, see Table
is logical
I
from the
and XOFF,
host.
requesting
and the Clear
described