Specifications

3 - 9
3.4 Cable Connection
(1) How to connect the cable
Connect the IN and OUT terminals with optical fiber cables as shown below.
Stations do not have to be connected in the order of station numbers. Any station
number can be assigned as the control station.
QCPU
Power supply
Control station
IN OUT
Station No.1
Normal station
n 64
Normal station
QJ71
LP21
-25
QCPU
Power supply
QJ71
LP21
-25
QCPU
Power supply
QJ71
LP21
-25
Station No.2 Station No.n
IN OUT IN OUT
(2) Installing the optical fiber cable
The following shows how to install the optical fiber cable:
Complete
Start (Installation)
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 secu
rely
connected.
Jack
Projection
Groove
Plug
Link module
(3) Removing the optical fiber cable
The following shows how to remove the optical fiber cable:
Press the fixed sections of the plug in
the directions of the arrows and pull out
the plug.
Complete
Start (Removal)
Put the covers, which were attached to
the plug before installation, back on both
the plug and jack to store.
Plug
Cover
POINT
The data link operation may be executed even if the IN and IN or the OUT and
OUT are connected with an optical fiber cable. However, the loopback function, the
network diagnostic function and some of other functions do not operate normally.
Therefore, make sure to connect IN and OUT.