System Configuration Patterns - Omron CS1W-CRM21 Operation Manual

CompoNet Networks
Branches
Communications Power
Supply
I/O Power Supply
1-1-3

System Configuration Patterns

Repeater Units connected
with multidrop connections
Master
Unit
Repeater
Unit
Branch line
Sub-trunk Sub-trunk
line line
Slave Units
Slave Units
Slave Units connected
connected with T-
with multidrop
branch
connections
connections
4
• Sub-branch line: The transmission path created using a T-branch from a
branch line. (T-branching is not possible from sub-branch lines.)
Note Due to differences in functionality, the same type of cable must be
used between the trunk line and a branch line, a sub-trunk line and
a branch line, and a branch line and a sub-branch line. Different
types of cable can be used between the trunk line and a sub-trunk
line.
There are two ways to create branch lines.
1) T-branch Connections
• T-branch connections using Flat Connectors (when Flat Cable I or Flat
Cable II is used)
• T-branch connections using commercially available relay terminals (when
round cable I or round cable II is used)
2) Multidrop Connections
• Multidrop connections using Flat Connectors and Multidrop Connectors
(when Flat Cable I or Flat Cable II is used)
• Multidrop connections using Open Type Connectors (when round cable I
or round cable II is used)
Note Flat Connectors can also be used to extend the Communications
Cable.
This is the power supply for communications and internal operations for each
Unit.
A commercially available 24-VDC power supply is used for communications
and internal operations in each Unit.
One communications power supply can be connected for a trunk line or a sub-
trunk line. Communications power is supplied to the trunk line from the Master
Unit and to a sub-trunk line from the Repeater Unit.
One power supply cannot be used to supply communications power to more
than one line (i.e., to the trunk line and sub-trunk line or to two sub-trunk
lines).
A commercially available 24-VDC power supply is used to power the I/O oper-
ations of the external I/O device connected to a Unit. It is connected to the I/O
power supply terminal of the Unit.
Slave Units connected
Repeater Units connected
with T-branch and then
with T-branch connections
multidrop connections
Trunk line
Repeater
Unit
Branch line Branch line
Repeater
Unit
Sub-trunk
Sub-trunk
line
line
Slave Units
Slave Units
Slave Units
connected with
multidrop
connections
Slave Units connected
with T-branch and
then T-branch
connections
Branch line
Branch line
Sub-branch line
Repeater
Sub-trunk
Unit
line
Branch line
Slave Units
Slave Units
Slave Units
Repeater Unit
Slave Units connected
connected to
with T-branch
create second
connections
segment layer
Slave Units
connected with
multidrop
connections
Terminating
Resistor
Slave
Repeater Unit
Unit
Branch line
Branch line
Repeater Unit
Sub-trunk
line
Slave Units
Section 1-1
: Slave Unit
: T-branch
: Multidrop
: Terminating Resistor