CS1G-CPU44H Datasheet, PDF (21/27 Pages) Omron Electronics LLC – CS1 CPUs Mean Ultimate Performance

CPU Overview
CS1D Duplex CPU Specifications
J System Configuration and Basic Functions
Item
Functional equivalence of
existing CS1-H CPUs
Mountable Modules
Mountable Inner Boards
System configuration
Duplex Mode
Duplex CS1D CPUs
(Supported only in Duplex
Mode in a Duplex System)
Specification
The following CPUs are equivalent in terms of basic functions (I/O points, program capacity, DM
capacity, and instruction execution speed).
CS1D-CPU67H: Equivalent to CS1H-CPU67H.
CS1D-CPU65H: Equivalent to CS1H-CPU65H.
CS1-Series Basic I/O Modules, CS1-Series Special I/O Modules, CS1-Series CPU Bus Modules
C200H Basic I/O Modules C200H Group-2 Multipoint I/O Modules, and C200H Special I/O Modules
cannot be mounted.
Non-duplex Inner Boards cannot be used in either Duplex Mode or Simplex Mode.
These system configurations are possible:
Duplex System
In a Duplex System, two CS1D CPUs, two (or one) CS1D Power Supply Units, and one Duplex Unit are
mounted to a CS1D Backplane.
Simplex System
In a Simplex System, one CS1D CPU, two (or one) CS1D Power Supply Units, and one Duplex Unit are
mounted to a CS1D Backplane.
A Duplex System can be operated in either of the following two modes:
Duplex Mode
The system operates with CS1D CPUs and CS1D Power Supply Units in duplex status.
Simplex Mode
The system operates with just a single CS1D CPU. In a Simplex System, only the Simplex Mode is
possible.
Operation of the two
CS1D CPUs in
Duplex
Operation of the two CS1D CPU in Duplex Mode Hot standby method:
One of the two CS1D CPUs actually controls operations, and the other is on
standby as a backup. The two CS1D CPUs have the same I/O memory, and
parameters (PLC Setup, I/O tables, etc.), and both run the same user’s program.
Their operations differ in the following points:
The active CPU executes I/O refreshing and all event servicing.
The standby CPU handles file accessing (read only) and FINS command
execution event servicing (read only).
Operation switching
errors
Power interruptions
(CPU operation setting
switch: NO USE), CPU
errors, memory errors,
program errors, cycle
time overrun errors,
FALS executions
If any of the errors listed on the left occur in the active
CPU, stopping operation, the standby CPU
automatically switches to active status and takes over
control. At the same time, the mode is switched to
Simplex Mode. The CPU where the error occurred
can be replaced without stopping system operation.
Duplex errors
Duplex bus errors
Duplex verification
errors
If either of the errors listed on the left occurs in Duplex
Mode, the active CPU remains the same and
operation is switched to Simplex Mode.
Automatic recovery
to duplex operation
After operation has been switched from Duplex Mode to Simplex Mode as a
result of any of the operation switching errors listed above, operation is
automatically returned to Duplex Mode when it is determined that the cause of
the error has been cleared. Automatic recovery to duplex operation must first be
enabled in the PLC Setup. (The recovery can be repeated up to ten times.)
Hardware conditions
for the two CS1D
CPUs in Duplex
Mode
Identical models must be used for the two CS1D CPUs.
Software conditions
for the two CS1D
CPUs in Duplex
Mode
The same user program areas must be used.The same parameter areas (PLC
Setup, etc.) must be used.
CS1D CPU online
replacement
The CS1D CPU where the error occurred can be replaced online by turning OFF
the power to only that Unit (i.e., setting the CPU operation switch to NO USE).
(This table continues on the next page.)
Programmable Controller CS1
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