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INFORMATION ABOUT INTERFACES
Cables used for Y·connection are shown in Fig. 8·7
Computer
F G
T X 0
R X 0
R T S
C T S
D S R
S G
D T R
Plotter
F G
T X 0
2
R X D
3
S G
7
S.TXD
14
S.RXD
16
~
f-
..---
""
/
fA
-
-----.-
2
3
t\
5
6
7
20
F G
T X 0
R X 0
R T S
C T
S
D S R
S
D T R
Terminal
• y
~connectionsetting
For use in the Y·connection, turn ON the DIP Switch 1-
®
of the DPX·3300 first and
turn ON the power switch next. In this condition, without letting all the data sent
from your computer or from a terminal to go through the I/O buffer, the DPX-3300
transmits them to the terminal or to the computer. At this time, the DPX-3300 only
transmits the data but does not operate drawing.
When receiving the
~.Y
or
~.(
command, the DPX-3300 stores data in the
I/O buffer and starts drawing following the data. Obviously the data being transmitted
here must be drawing data. And they can be output to the terminal. The way the
drawing data are output to a terminal varies from the 2nd bit to 3rd bit of the second
parameter of [J;]EJ.@ command as shown in Table 8-1. (Monitor mode is OFF, monitor
mode 1, monitor mode 2)
The way your computer responds to a request of the DPX·3300 varies depending
on requests of the RD-GL II command and the device control commands. In fact, it
varies from the 2nd bit to 3rd bit of the second parameter of
.@
command as
shown in Table 8-1. In this condition, the data from the terminal can be sent to the
computer. But when the DPX-3300 is in response to the computer, this response
has the first priority and the data from the terminal are ignored.
Also, when receiving the
ITSE1Z
or
.) command, the DPX··3300 comes in
the sarne condition as before it receives the
.Y command or
.( command.
8-8
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