Control Expert Version Requirement
An M580 non-safety Hot Standby system can be configured using Control Expert L or XL version 11.0 or later. By contrast, an M580 safety Hot Standby system can be configured using only Control Expert XL Safety version 14.0 or higher.
Confirm that the primary PAC and the standby PAC consist of compatible hardware, including:
An application created for a specific may not be compatible with other CPUs. The M580 Hot Standby system compares the applications in the primary CPU against the application in the standby CPU to determine if the applications are compatible.
NOTE: An application created for a non-safety CPU cannot be run on a safety CPU, and an application created for a safety CPU cannot be run on a non-safety CPU.
For example:
-
A Quantum 140CPU67•6• CPU Hot Standby application is not downloadable to M580 BMEH58•040 Hot Standby CPUs.
-
An M580 BMEP58•0•0 CPU application is not downloadable to M580 BMEH58•040 Hot Standby CPUs.
-
As described in the following table, an application designed for one M580 BMEH58•040 Hot Standby CPU may not be downloadable to other M580 Hot Standby CPUs.
The following table depicts the compatibility of applications among non-safety M580 Hot Standby CPUs:
|
An application built for:
|
Can be downloaded to and executed by the following CPUs:
|
|
BMEH582040
|
BMEH584040
|
BMEH586040
|
|
BMEH582040
|
X
|
X
|
X
|
|
BMEH584040
|
–
|
X
|
X
|
|
BMEH586040
|
–
|
–
|
X
|
|
X: Can receive and execute the application.
–: Cannot receive and execute the application.
|
The following table depicts the compatibility of applications among M580 safety CPUs:
|
An application built for:
|
Can be downloaded to and executed by the following CPUs:
|
|
BMEP582040S
|
BMEP584040S
|
BMEH582040S
|
BMEH584040S
|
BMEH586040S
|
|
BMEP582040S
|
1
|
2
|
2
|
4
|
4
|
|
BMEP584040S
|
3
|
1
|
3
|
4
|
4
|
|
BMEH582040S
|
2
|
2
|
1
|
2
|
2
|
|
BMEH584040S
|
3
|
2
|
3
|
1
|
2
|
|
BMEH586040S
|
3
|
2
|
3
|
3
|
1
|
-
Fully compatible.
-
Compatible, if CPU is upgraded in Control Expert and the application is fully rebuilt.
-
Compatible, if CPU is upgraded in Control Expert and the application is fully rebuilt, and there is no limitation as to memory size.
-
Compatible only for application with no CIP Safety devices, if CPU is upgraded in Control Expert and the application is fully rebuilt.
|
An M580 Hot Standby system can continue operating when there is a mismatch of firmware versions in the primary and standby CPUs, if each CPU firmware can execute the application. This makes it possible to upgrade (or downgrade) CPU firmware without having to stop the operation of the Hot Standby system. To permit Hot Standby operations to continue in this case, use an animation table or program logic to set the
FW_Mismatch_Allowed attribute of the
T_M_ECPU_HSBY to
True.
An M580 Hot Standby system cannot operate if the primary and standby CPUs are equipped with fundamentally different applications. In this case, the primary PAC operates as a standalone PAC, and the standby PAC enters the stop state.
To restore Hot Standby system operations, confirm that the same application is installed in both the primary and standby PACs.
An M580 Hot Standby system can continue operating if the primary and standby CPUs are running different revisions of the same application. In this case, both CPUs were initially configured with the same application, but the logic in one CPU – usually the primary CPU – was subsequently revised.
For Hot Standby operations to continue when a logic mismatch exists, use an animation table or program logic to set the
Logic_Mismatch_Allowed attribute of the
T_M_ECPU_HSBY DDT to
True.
For Hot Standby operations to continue when a logic mismatch exists, do both of the following:
A sequential function chart (SFC) mismatch occurs when the applications in the primary and standby CPUs include graphic symbols that define sequential program steps, where differences exists in at least one SFC section.
