Omron CS1W-CLK12-V1, Руководство по эксплуатации

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10
Overview Section 1-1
Used in combination with token-ring mode, Duplex Communications Units
allow the creation of communications systems with greater reliability. It is pos-
sible to use Duplex Communications Units in token-bus mode, but when an
active/standby switchover occurs because of an error in the active Controller
Link Unit, or when Units are replaced online, because the system does not
have duplex transmission paths, the network is split into two. Therefore, use
Controller Link Units in token-ring mode.
When using the CS1D System in token-ring mode, if an error occurs at a
Communications Unit (Controller Link Unit), the online replacement function
(see note) allows the Unit to be replaced without stopping system operation or
communications for the whole network. In particular, if the Unit is used in
duplex operation, the other Unit switches to active mode and quickly joins the
network, minimizing the influence on communications.
Note The online replacement function is a function that allows Units in CS1D Sys-
tems to be replaced without turning OFF the power for the whole PLC. It can
be executed only from a Programming Console.
Two Controller Link Units that are used in duplex operation are treated as just
one node in the Controller Link Network and can be used in the same way as
pre-version 1 models (i.e., without “-V1” at the end of the model number). The
operating status of the active Controller Link Unit is constantly stored in the
standby Controller Link Unit and so operation continues smoothly if there is an
active/standby switchover between the Units.
C
P
U C
P
U D
P
L
C
P
U P
S P
S C
L
K
C
L
K
C
P
U C
P
U D
P
L
C
P
U P
S P
S C
L
K
C
L
K
D
P
L
C
P
U P
S P
S C
L
K
C
L
K
C
P
U P
S C
L
K
Set to same unit
number and same
node address
PS: Power Supply Unit
CPU:CPU Unit
DPL: Duplex Unit
CLK: Cont roller Link Unit
Standby Controller Link Unit
H-PCF cable or GI cable (ring connection)
CS1D
(Duplex System)
Set to same unit
number and same
node address
CS1D
(Duplex
System)
CS1D
(Simplex System)
Set to same unit
number and same
node address
PLC other than
CS1D
Empty