1
-
3
1.2 Features
1
OVERVIEW
(4) External power supply allows continuous network communication even
during power-off of personal computer. (Function of the CC-Link IE
Controller Network board with external power supply function)
Since power is supplied externally, the CC-Link IE Controller Network board with
external power supply function can continue network communication (baton passing)
even if a personal computer is powered off and data link cannot be performed.
Therefore, a normally operating station connected between other stations with power-
off computers will not be disconnected from the data link.
Another advantage is that the link scan time is stabilized since loopback can be also
prevented.
When CC-Link IE Controller Network boards without the external power supply function
are installed to station number 3 and 5, and if personal computers of these stations are
powered off, station number 3, 4, and 5 will be disconnected from the network.
Q80BD-
J71GP21-SX
QJ71GP21
-SX
QCPU
Q80BD-
J71GP21S-SX
Control station (No.1)
Normal station (No.3)
Normal station (No.2)
External power
supply
External power
supply
Normal station (No.6)
Normal station (No.4)
Normal station (No.5)
Q81BD-
J71GP21-SX
Q81BD-
J71GP21S-SX
QJ71GP21
-SX
QCPU
Since external power is supplied to stations No.3 and
No.5, networking of all stations continues normally.
If the boards on stations No.3 and No.5 do not have the
external power supply function, they are disconnected
from the network.
Station No.1
Disconnected
Station No.2
Station No.3
Station No.6
Station No.5
Station No.4
Personal computer
Personal computer