 |
| Place of Origin: | GERMANY |
| Brand Name: | LENZE |
| Certification: | CE |
| Model Number: | E82EV251K2C200 |
| Minimum Order Quantity: | 1pcs |
|---|---|
| Packaging Details: | carton |
| Delivery Time: | in stock |
| Payment Terms: | T/T, Western Union, MoneyGram |
| Supply Ability: | 100pcs/week |
| LENZE: | LENZE | E82EV251K2C200: | E82EV251K2C200 |
|---|---|---|---|
| Material: | Iron | Germany: | Germany |
| Color: | Black | Wire: | Wire |
| Temperature: | 20-90 |
| ote A memory reset only ever affects the CPU to which you have applied the function. |
The content of the work memory and the retentive and non-retentive data are deleted (in a manual memory reset). |
| . For a memory reset of both CPUs, apply the function to each in turn. |
The diagnostics buffer, time of day, and IP address are retained. |
| Memory reset means: ● An existing online connection between your programming device/PC and the CPU is terminated. |
Subsequently the CPU is initialized with the loaded project data (hardware configuration, code and data blocks, force jobs). The CPU copies this data from the load memory to the work memory. |
Data blocks no longer have actual values but rather their configured start values.
● Force jobs remain active.
Detecting a CPU memory reset
The RUN/STOP LED flashes yellow at 2 Hz. After completion, the CPU switches to STOP.
The RUN/STOP LED is on (constant yellow lighThe CPU executes an automatic memory reset if an error occurs that prevents normal
further processing.
Examples of such errors:
● User program is too large and cannot be loaded to the work memory in full.
● The project data on the SIMATIC memory card are damaged, for example because a file
was deleted.
● You remove or insert the SIMATIC memory card. The backed-up retentive data differs in
structure from the data in the configuration on the SIMATIC memory card.
● SYNCUP aborts in the backup CPU. You can find more information in the section
SYNCUP system state (Page 20Memory reset is required to reset the primary or backup CPU to its "initial state". Memory
resets can only be run in the STOP operating state of a CPU.
CPU memory reset
There are three options for performing a CPU memory reset:
● Using the mode selector
● Using the display
● Using STEP 7
Procedure using the mode selector
Note
Memory reset ↔ Reset to factory settings
The procedure described below also corresponds to the procedure for resetting to factory
settings:
• Selector operation with inserted SIMATIC memory card: CPU executes a memory reset
• Selector operation without inserted SIMATIC memory card: CPU executes reset to factory
settings
Proceed as follows for a CPU memory reset using the mode selector:
1. Set the mode selector master interface module to STOP.
Result: The RUN/STOP LED lights up yellow.
2. Set the mode selector master interface module to MRES. Hold the selector in this position
until the RUN/STOP LED lights up for the 2nd time and remains continuously lit (this
takes three seconds). Then release the switch.
3. Within the next three seconds, switch the mode selector back to the MRES position and
then back to STOP.
Result: The CPU executes a memory reset.
For information on resetting the CPU to factory settings, please refer to the section Resetting
CPUs to factory settings (Page 277).To navigate to the required "Memory reset" menu item, select the following sequence of
menu commands and confirm each selection with "OK".
● Settings → Reset → Memory reset
Result: The CPU executes a memory reset.Requirement: There is an online connection between the CPU ad PG/PC.
Proceed as follows for a CPU memory reset with STEP 7:
1. Open the "Online Tools" task card of the CPU.
2. Click "MRES" in the "CPU operator panel" pane.
3. Click "OK" in response to the confirmation prompt.
Result: The CPU executes a memory reset.
