Hitachi UX Twin Nozzle Service Manual page 105

[Specification of External communication (RS-232C)]
- Connector for external communication (RS-232C) is mounted on EZJ127A board.
- Used signals: SD, RD and SG
- Signal specification (NC: No connection)
Pin number
1
2
3
4
5
6
7
8
9
Connector on EZJ127 board: 9-pin D-sub connector (Plug)
Send data
Receive data
The control signals
are looped back on
EZJ127A board.
- Connector position: Inside the top cover (upper part of cabinet)
EZJ119A board
(Option)
Name Input/Output
(NC) -
RD Input
SD Output
DTR -
SG -
DSR -
RTS -
CTS -
(NC) -
1#
5#
9#
6#
IJ Printer
Output
SD
#3
Input
RD
#2
Output
DTR
#4
DSR Input
#6
Output
RTS
#7
Input
CTS
#8
#5
SG
Cable length : maximum 15m
Terminal block
(M4 screw)
TB2 (Option)
3-29
Remarks
No connection
Connected to DSR on IJ printer
Ground
Connected to DTR on IJ printer
Connected to CTS on IJ printer
Connected to RTS on IJ printer
No connection
Fixing screws: Inch screw
External device
RD
SD
EZJ127A board
Terminal block
(Push type)
TB1
SG
FG
Connector for
communication
(RS-232C)
CN3