Backup Power Supply Wiring - Omron SYSMAC CS1W-CLK13 Operation Manual

Optical Wiring
Note
3-3-3

Backup Power Supply Wiring

Note
Although there is no fixed order in which the nodes must be connected, in
order to minimize the effect on communications time in the event of a discon-
nection, it is recommended that they be connected in node address order
(node 1 → node 2... → node 62 → node 1) whenever possible.
Pairs of Controller Link Units used in duplex operation can also be connected
in any order but they must be connected with special cable. (There must be no
other nodes between them.)
Higher
1 node
Active mode Standby mode
(See
note
1.)
R R
R R
T
T
T
T
R: Receive
1. Connect active and standby Controller Link Units using a GI cable (of at
least 50 cm in length). See 1-2-6 Devices Required for Connection for de-
tails on available GI Optical Fiber Cables.
2. Always use the specified Optical Fiber Cables.
3. The maximum distance between nodes depends on the type of GI cable
(core diameter) that is being used.
62.5/125 µ m cable: Max. distance between nodes = 2 km
50/125 µ m cable: Max. distance between nodes = 1 km
4. There are no special restrictions that apply to the distance between stand-
by Controller Link Units and higher or lower Controller Link Units. (The re-
strictions, however, on the maximum transmission distance for Controller
Link Networks (30 km) and the maximum distance between nodes (de-
pends on the cable construction method) must be satisfied.)
5. The standby Controller Link Unit does not participate in communications
and so is not counted as a node. However, because standby Units are in-
cluded in the figure for the maximum number of mountable Units (62), the
maximum number of active nodes is equal to the following:
62 − Number of standby Units
6. The network can include a mixture of duplex and non-duplex nodes.
Each node requires a backup power supply for the node bypass function. Sev-
eral nodes can be connected to a single power supply or each node can be
connected to an independent power supply.
Be sure that the backup power supply is providing sufficient current and volt-
age at the Unit's connector. See 1-2-8 Backup Power Supply (Optical System
Only) for the backup power supply specifications.
1. A label has been placed over the upper surface of the CS-series Controller
Link Units to prevent wire cuttings from entering the Unit. When wiring the
backup power supply, leave the label in place.
Lower
1 node
Active mode Standby mode
(See
note
R
R
1.)
R
R T
T
T
T
T: Transmit
Section 3-3
1 node
Active mode Standby mode
(See
R
note
R
1.)
R
R
T T
T
T
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