Omron CS1 Manual page 9

Programmable Controller Programmable Controller The CS1 Duplex System Boosts the
Reliability of Facilities and Equipment
7
7
Ethernet Unit
● Communications Units can be either duplexed or
used individually.
Hot Standby System Adopted for
CPU Unit Duplexing
●
When a problem occurs in the CPU Unit,
the system instantly switches control to
the other CPU Unit, enabling continuous
operation with minimal effect on the
system.
●
Because there is no need for special
duplex programming, the design process
is simple and design steps are reduced.
The system can also be configured with only one each
of the CPU, Power Supply, and Communications Units.
This lets you optimize the system cost by selecting the
Units that you need. (The Duplex Unit must be used
even when using only one each of the CPU, Power
Supply, and Communications Units.)
Duplex operation is possible for any or all of the following:
CPU Units, Power Supply Units, and Communications Units.
Use duplex operation for the CPU Unit,
power supply, or communications
depending on system requirements for
reliability, costs, and functionality. For
example, use duplex operation for all of
Increase the Reliability of Information with Duplex Networks
Duplex Ethernet for Greater Information Network Reliability
With redundant networks and
Communications Units, communications will
continue even if a network line is broken or
one of the Communications Units fails. The
communications path is automatically
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Controller Link Unit
Duplex CPU Units
Duplex Power Supply Units
● Power Supply Units can be either duplexed or
used individually.
Online Unit Replacement
With either a Duplex-CPU or Single-CPU
CS1D System, Basic I/O Units, Special I/O
Units, and CPU Bus Units can be replaced
online while the system continues operation.
Although operation will stop for the Unit
being replaced, all other Units will continue
operation.
During System Operation with
Power Supplied
Unit
replaced
these for systems that must never go down
or use duplex operation for only the power
supply (which has a relatively short service
life). Just build in the redundancy required
by the system.
selected for each communications process
(as opposed to switching the entire line), to
enable creating a highly reliable network
even against a network line broken in more
than one location.
This path is automatically selected.
This path is automatically
selected.
Unit failure This path is automatically selected.
The CS1D-ETN21D and
CS1D CPU Unit version
1.1 or higher are
required for a duplex
Ethernet network.
Duplex Networks between PLCs
with Controller Link
Even if one Unit fails, the other Unit will
back it up and continue communications.
Even if a line breaks, a loopback will be
used to maintain the network.
Either the CS1W-CLK13 or CS1W-CLK53 is
required for a Duplex Controller Link network.
Line backed
up with
loopback
Unit failed.
Node backed up.
Perform the online Unit
replacement operation
from the Programming
Console or CX-Programmer.
Program without Being Concerned with Duplex Operation
No special programming is required to use duplex communications with
the CS1D, making it simple to design programs for duplex systems.
●
The complex programming required in previous applications for duplex
communications with Ethernet is eliminated.
Previously it was necessary to program
operation for both Ethernet Units.
Programming to
determine destination
Tried first.
SEND
Other Unit tried if no
response from first Unit.
SEND
● Controller Link networks enable allocating data link areas without wasting
memory.
Previously, twice
the memory was
Two sets of
required to
the same data
implement data
link areas
links for two
were required
Controller Link
and
Units, and it was
programming
necessary to
was required
determine which
to select the
data could be
areas.
used.
Expansion Cables and Expansion Backplanes can be duplexed
and replaced online.
Expansion Cables can be
duplexed and replaced online.
By mounting Duplexed Expansion I/O Units
and Expansion Cables, the Expansion
Cables can be replaced during operation. In
addition, problems such as cable
disconnections are monitored, so the
location of the failure can be easily identified.
Break
Just program the operation as if for one
Ethernet Unit, and the PLC will determine
the destination and send the message.
PLC automatically determines
destination.
SEND
Destination
Just create the
data links for one
Controller Link Unit
to eliminated
wasted data
memory. The
Duplex Controller
Link Units share
the data links.
Expansion Backplanes can be
added online.
●
Even in systems where the power cannot
be turned OFF or operation cannot be
stopped, it is easy to add functions after
system operation has started.
●
Modifications can be easily made after
startup for devices for which the power is
not easily turned OFF.
Equipment in operation
DPL01
ETN21D RUN ERC 100M ERH ERR/ALM RUN L ACTIVE DPL STATUS ERR/ALM RUN
RD SD TCP INH BKUP ACTIVE R CPU STATUS INH BKUP
LINK DPL PRPHL COMM LEFT CPU CPU STATUS PRPHL COMM
NO. UNIT 0 CS1D-CPU67H SYSMAC USE SYSMAC CS1D-CPU67H
PROGRAMMABLE CONTROLLER NO USE PROGRAMMABLE CONTROLLER
NO. NODE 0 1 RIGHT CPU
×16 1 0 ×16 MCPWR BUSY USE MCPWR BUSY
OPEN NO USE OPEN
DPL SW
SPL ACT. ON ACT. DPL OFF
ON LEFT RIGHT
100BASE-TX PERIPHERAL INIT. PERIPHERAL
10BASE-T
SW
PRPHL COMM A39512
PORT ON RSV PORT
DUPLEX
No need to stop
equipment to make
additions.
Rack added
Initial and maintenance costs
are reduced.
Allows effective use of software
assets.
The same support software can be used in
systems combining the CS1 and CJ1 Series,
and all software programs and data are
compatible. Their application and reuse are
extremely easy. There is also no need for
ladder programs for duplexing. This means
that when converting an existing system to a
Duplex System, there is almost no need to
revise ladder programs.
Complete compatibility among
Units.
The CS1D Duplex System is fully compatible
with the I/O Units of the entire CS Series.
Accordingly, the same Units and materials
can be used for restoring the system and
conducting maintenance. There is no need
to purchase different Units and materials for
each system, making the CS1D Duplex
System highly economical.
(C200H Units, however, cannot be used with CS1D
PLCs. Refer to user documentation for details.)
Refer to CS1D Catalog (Cat. No.
R103) for details.
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