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MELSEC-Q
4 SETTINGS AND PROCEDURES PRIOR TO OPERATION
4.3 Part Names and Functions
Part names of Q series C24 are shown below.
1) 1) 1)
2)
3)
2)
2)
4)
4)
(*1)
QJ71C24N
QJ71C24 (*2)
QJ71C24N-R2
QJ71C24-R2
QJ71C24N-R4
5) 5) 5)
1 The appearance of the QJ71C24 is almost the same as that of the QJ71C24N, except for the model
name part and serial number plate.
2 The appearance of the QJ71C24-R2 is almost the same as that of the QJ71C24N-R2, except for the
model name part and serial number plate.
Name Contents
1) Display LED Display LED (For details, see (1).)
2) RS-232 interface
RS232 interface for serial communication with external
devices (D-Sub 9 pin)
3) RS-422/485 interface
RS422/485 interface for serial communication with external
devices (2-piece terminal block)
4) RS-422/485 interface
RS422/485 interface for serial communication with external
devices (2-piece plug-in socket block)
5) Serial number plate Indicates the serial No. of the serial communication module.
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