Mitsubishi Electric QJ71LP21 Reference Manual page 104

4 SETUP AND PROCEDURES BEFORE STARTING THE OPERATION
Insert the plug by aligning the groove of
the plug with the projection of the jack.
Push the plug in until the plug fixing hole
catches the hook of the jack.
Pull the plug lightly in the direction of the
arrow to make sure that it is securely
connected.
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(2) Cable connection
(a) How to connect the cable
Connect the IN and OUT terminals with optical fiber cables as shown below.
(Connect the OUT terminal of the host station with the IN terminal of the
next station.)
Stations do not have to be connected in the order of station numbers.
Remote master station is set as station number 0.
a - 1) QJ71LP21-25 - QJ72LP25-25, QJ71LP21G - QJ72LP25G
Remote master station
Station
No. 0
QCPU QJ71
LP21
IN OUT
a - 2) QJ71LP21GE - QJ72LP25GE
Remote master station
QJ71LP21GE
SD
IN
RD
SD
OUT
RD
Optical module
(b) Installing the optical fiber cable
The following shows how to install the optical fiber cable:
Start (Installation)
Complete
Remote I/O station
Station
No. 1
QJ72
LP25
IN OUT
Remote I/O station
QJ72LP25GE
RD
IN
SD
RD
OUT
SD
Optical fiber cable
Link module
Groove
MELSEC-Q
Remote I/O station
Station
No. n n ≤ 64
QJ72
LP25
IN OUT
Remote I/O station
QJ72LP25GE
RD
IN
SD
RD
OUT
SD
Jack
Projection
Plug
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