Omron CRT1 - 10-2009, Operation Manual

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39
Communications Cable
Section 2-3
Note (1) Bit Slave that come with a flat cable already connected cannot be con-
nected if the preconnected cable is removed.
(2) If a baud rate of 4 Mbps is used, branching and multidrop connections are
not possible from the trunk line. (There are no Multidrop Connectors for
Flat Cable II.)
Using Different Cable
Types
The same type of cable must be used for all lines downstream from the Mas-
ter Unit (i.e., the trunk line and branch lines, sub-trunk lines and their branch
lines, and branch lines and sub-branch lines must use the same type of
cable).
When Repeater Units are used, however, different cables can be used for the
trunk line and sub-trunk lines, and for sub-trunk lines and sub-trunk lines,
above and below a Repeater Unit.
Note Round cable I, round cable II, Flat Cable I (Standard) and Flat Cable II
(Sheathed) are treated as different types of cable.
Restrictions in Distance between Cables of Multiple CompoNet Systems
When using more than one CompoNet System with Flat Cable I or II, opera-
tion may be unstable due to interference. To prevent this, the Flat Cables for
the different CompoNet Systems must be separated from each other by at
least 5 mm.
Wiring method for communica-
tions power supply Wired separately
from the Communi-
cations Cable. Supplied via Communications Cable. (Power is supplied from the
Master Unit and Repeater Units.)
Master Unit location End of trunk line Baud rate other than 93.75 kbps: End of trunk line
93.75 kbps: Anywhere in network
Item Cable type
Round cable I Round cable II Flat Cable I Flat Cable II
Repeater Unit
Slave Unit
Cable (trunk line)
Slave Unit
Cable (sub-trunk line)
Different types of cable can be used.
The same type of cable must be used.
Master
Unit
The same type of cable must be used.