Mitsubishi Electric MELSEC iQ-R Series User Manual page 185

Function
Redundant Operation mode
function change
System switching
Tracking transfer
Memory copy
from control
system to standby
system
System
consistency check
Program
execution in both
systems
Redundant
system operation
setting
Redundant
function module
communication
test
Settings for
redundant system
with redundant
extension base
unit
Automatic
recovery of the
CPU module of
the standby
system
Replacement/
addition of an
extension cable
(online)
Ethernet function
SLMP communication function
Inter-module synchronization
function
iQ Sensor Solution function
Description
Switches the operation mode of the redundant system
between the backup mode for normal operation and the
separate mode for system maintenance while it is
running.
Switches the systems between the control system and the
standby system to continue operation of the redundant
system when a failure or an error occurs in the control
system. For debugging and maintenance purpose, users
can switch the systems at any desired timing.
Transfers the control data from the control system to the
standby system and maintains the consistency of the data
in the two systems to continue operation of the redundant
system when a failure or an error occurs in the control
system.
Transfers data such as parameters and programs in the
CPU module of the control system to the CPU module of
the standby system to maintain the consistency of the
memory in the two CPU modules.
Checks whether the system configurations and files in the
CPU modules are the same between the control system
and the standby system when the redundant system is in
backup mode.
Detects an error in the external device or network of the
systems (control system and standby system)
respectively by executing a program that diagnoses
external devices and networks in both systems.
Sets the redundant system operation in the redundant
system settings of the CPU parameter.
Checks the redundant function module itself for errors
when its communications are unstable.
Sets the operation of the redundant system with
redundant extension base unit in the redundant system
settings of the CPU parameter.
Allows the CPU module of the standby system to
automatically recover from a specific error that occurs in
the CPU module of the standby system. (Manual
operation (turning off and on or resetting the system) is
not required to recover the system.)
The extension cable on the inactive side (ACTIVE LED is
turned off) between the redundant extension base units
can be replaced or added while the system is running.
Accesses the CPU module over Ethernet.
Using this function, the CPU module can connect to
MELSOFT products and GOTs, perform socket
communications, and transfer FTP files.
Enables accesses to devices/labels and remote
operations from external devices other than the
engineering tool by sending request messages using
SLMP.
Controls multiple modules synchronously.
Functions provided by iQ Sensor Solution
Availability according Reference
to operation mode
Process Redundant
mode mode
  Page 371 Operation Mode
Change
  Page 374 System
Switching
  Page 388 Tracking
Transfer
  Page 405 Memory Copy
from Control System to
Standby System
  Page 413 System
Consistency Check
  Page 418 Program
Execution in Both Systems
  Page 425 Redundant
System Operation Setting
  Page 428 Redundant
Function Module
Communication Test
  Page 429 Settings for
Redundant System with
Redundant Extension Base
Unit
  Page 430 Automatic
recovery of the CPU module of
the standby system
  Page 548 Replacement/
Addition of Extension Cables
(Online)
   MELSEC iQ-R Ethernet/
CC-Link IE User's Manual
(Startup)
   SLMP Reference Manual
   MELSEC iQ-R Inter-
Module Synchronization
Function Reference Manual
   iQ Sensor Solution
Reference Manual
12 FUNCTION LIST
12
183