●Connection of signals 1-43
1.5.3-11 External communication (RS-232C)
External equipment is connected to the IJ printer by serial communication of
RS-232C.
(a) Wiring
Pin number Name Input/Output Remarks
1 (NC) - Unconnected
2 RD Input
3SDOutput
4 (NC) - Unconnected
5 SG - Ground
6 (NC) - Unconnected
7 (NC) - Unconnected
8 (NC) - Unconnected
9 (NC) - Unconnected
Attaching screw: inch screw
Substrate side connector: 9-pin D sub-connector (plug)
IJ printer
Transmission
Reception
Cable length: maximum 5m
SD
RD
SG
Output
#3
#2
#5
Input
External device
RD
SD
SG
FG
● Do not connect any signal other than #2, #3 and #5 since it is not
used.
● 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 and
the terminal block 2).
● Use a cable which is as short as possible.
Caution
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