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Input/output (I/O) specifications 4-24
Attaching screw : inch screw
Connector on EZJ127 board :9-pin D sub-connector(plug)
IJ printer
SD
Output
#3
RD
Input
#2
External unit
RD
SD
Transmission
Reception
SG
SG
FG
#5
Cable length : maximum 5 m
DTR
DSR
#4
#6
RTS
CTS
#7
#8
ON
1
SW1
ON
OFF
2
3
4
5
6
7
8
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
Input/Output
Remarks
1
(NC)
-
2
RD
Input
3
SD
Output
4
DTR
-
Connect with DSR by IJ printer side.
5
SG
-
6
DSR
-
Connect with DTR by IJ printer side.
7
RTS
-
Connect with CTS by IJ printer side.
8
CTS
-
Connects with RTS by IJ printer side.
9
(NC)
-
Turn OFF SW1-bit7 on EZJ 127 board.
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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.
CAUTION