Hitachi IJ RX2 Technical Manual page 55

4.3.4-6 External communication (RS-232C)
External equipment is connected to the IJ printer by serial communication of RS-232C.
Pin No. Name
1 (NC)
2 RD
3 SD
4 DTR
5 SG
6 DSR
7 RTS
8 CTS
9 (NC)
Connector on EZJ127 board :9-pin D sub-connector(plug)
Transmission
Reception
Turn OFF SW1-bit7 on EZJ 127 board.
SW1
ON
1
●Do not bundle it together with heavy-current signals inside and outside the equipment
so that it will not be influenced by noise from a heavy-current signals (a connection
signal to the power supply, etc).
●Use a cable which is as short as possible.
Input/Output
-
Input
Output
- Connect with DSR by IJ printer side.
-
- Connect with DTR by IJ printer side.
- Connect with CTS by IJ printer side.
- Connects with RTS by IJ printer side.
-
Attaching screw : inch screw
IJ printer
SD Output
#3
RD Input
#2
DTR
#4
DSR
#6
RTS
#7
CTS
#8
#5
SG
Cable length : maximum 5 m
2 3 4 5
CAUTION
Remarks
External unit
RD
SD
SG
ON
6 7 8
OFF
FG
●Input/output (I/O) specifications 4-24