LENZE E82EV222K4C200 E82EV222K4C200 E82EV222K4C200 E82EV222K4C200 E82EV222K4C200

8 Assign CPUs redundancy IDs Section Redundancy IDs (Page 187)
9 Check LEDs You can find the meaning of the LEDs in
the module manuals.
10 Evaluate information on the CPU displays Section CPU display (Page 248)
11 Load hardware configuration and user program to the CPUs Section Downloading projects to the
CPUs (Page 192)
12 Test inputs and outputs The following functions are helpful: Monitoring
and modifying tags, testing with
program status, forcing, and controlling
outputs in STOP. You can find more
information in theFor the R/H redundant system, you need a SIMATIC memory card for each of the
two CPUs.
The CPUs only support pre-formatted SIMATIC memory cards. If required, format the
SIMATIC memory cards before using them in the CPU.
You can find more information on formatting SIMATIC memory cards in the function manual
Structure and use of the CPU memory For the R/H redundant system, you need a SIMATIC memory card for each of the
two CPUs.
The CPUs only support pre-formatted SIMATIC memory cards. If required, format the
SIMATIC memory cards before using them in the CPU.
You can find more information on formatting SIMATIC memory cards in the function manual
Structure and use of the CPU memory Carefully insert the SIMATIC memory card into the CPU, pushing gently, until the card
clicks into place.Proceed as follows to remove a SIMATIC memory card:
1. Open the front cover.
2. Switch the CPU to STOP.
3. Gently push the SIMATIC memory card into the CPU. Once it has clicked into place,
remove the SIMATIC memory card.
Only remove the SIMATIC memory card in the POWER OFF or STOP state of the CPU.
Ensure that:
● No writing functions are active in STOP. Writing functions are online functions with the
PG/PC, for example loading/deleting a block and test functions.
● No writing functions were active before POWER OFF
If you remove the SIMATIC memory card during a write process, the following problems can
occur:
● The data contents of a file are incomplete.
● The file is no longer readable, or no longer exists.
● The entire content of the card is corrupted.
Please also note the following FAQs on the InternetIf you switch a CPU in redundant mode to the STOP operating state, the R/H
redundant system switches to the RUN-Solo system state. The other CPU maintains control
of the process.Inserting or removing the SIMATIC memory card in STOP operating state triggers a reevaluation
of the SIMATIC memory card. The CPU compares the content of the
configuration on the SIMATIC memory card with the backed-up retentive data. If the backedup
retentive data matches the data of the configuration on the SIMATIC memory card, the
retentive data is retained. If the data differs, the CPU automatically performs a memory
reset. A memory reset deletes the retentive data on the CPU. After memory reset, the CPU
switches to STOP. You can find more information on memory resets in the section CPU
memory reset (Page 231).
The CPU evaluates the SIMATIC memory card. This process is indicated by the RUN/STOP
LED flashing.
Note
Using the SIMATIC memory card as a firmware update card
If you use the SIMATIC memory card as a firmware update card, removing and inserting the
card will not result in the loss of retentive data.The SIMATIC R/H redundant system has been installed.
● The system has been wired.
● The SIMATIC memory cards are in the CPUs.
Procedure
Proceed as follows to commission the CPUs:
1. Switch on the system power supply and load power supply.
Result:
● The CPUs run a flash test:
– All LEDs flash at 2 Hz

in the PROFINET ring. Pairing errors are reported in the diagnostics buffer.Proceed as follows to pair two CPUs
1. Create a redundancy connection between two CPUs. Connect the CPUs to the relevant
ports of the interfaces (for example for R-CPUs: X1 P2 R).
2. POWER ON both CPUs.
Loss of pairing
If pairing is already established, an inadmissible configuration version will lead to the loss of
pairing. Loss of pairing in RUN system state also causes the loss of synchronization
between primary CPU and backup CPU. The system switches to the RUN-Solo system
state.
The primary CPU switches to the RUN operating state and takes on sole control of the
process. The backup CPU switches to the STOP operating state.
In the event of the loss of pairing as a result of the failure of the primary CPU, the backup
CPU becomes the new primary CPU and takes on sole control of the process.
Note
An invalid configuration variant with more than two R/H CPUs can lead to a faulty system
state. Both R/H CPUs become primary CPUs.You can find out how to check the success of pairing on the display and in STEP 7 in the
section Checking before replacing componenPlease observe the following rules if the redundant system is in the RUN-Solo system state:
● Do not immediately start replacing components.
● Do not immediately switch the failed CPU to the RUN. operating state.
First check the pairing status in the RUN-Solo system state.This could result in an undefined system state for the redundant system. Both CPUs would
become primary CPUs.
If the R/H redundant system is in the RUN-Solo system state, you must not
immediately switch the backup CPU to the RUN operating state.
Possible cause: No pairing between the two CPUs. Check the pairing status on the display
or on the basis of the diagnostics status or diagnostics buffer.
If there is no pairing, the redundancy connections have been interrupted. Follow the
procedure described in the section Checking before replacing components (Page 257)The primary CPU and backup CPU roles are assigned by the R/H redundant system
during pairing.
The redundant system compares the following criteria of the two SIMATIC memory cards
and prioritizes the assignment of roles:
● SIMATIC memory card contains a STEP 7 project
→ High priority
● SIMATIC memory card is empty and writable
→ Medium priority
● SIMATIC memory card:
– missing or
– inserted, is empty or is not writable
→ Low priority
Result:
If the two R/H CPUs have different priorities, the CPU with the higher priority becomes the
primary CPU.
If the priorities are identical, the R/H CPU with the lower CPU serial number becomes the
primary CPU (see nameplate on the CPU or on the CPU display).
Note
If an R/H CPU is in RUN mode, the assigned role does not change when pairing again.For redundant operation, the two CPUs in the redundant system must process identical
project data. In SYNCUP, the operating system copies the content of the SIMATIC memor