Operating hour counter

Operating hour counter 1:

The EP6090-0000 may not be used for billing purposes

The EP6090-0000 was not developed with the aim of maximum tamper-proofness.

The operating hour counter can be regarded as being similar to the milometer of a car.

The operating hour counter starts as soon as the supply voltage is applied. The counter value cannot be changed or set to zero.

The counter value is saved in a non-volatile memory every 15 minutes. After applying the supply voltage, the operating hour counter resumes counting from the saved counter value.

Reading the counter value

The current counter value is located in the variable "Operating time" in the process data object Process image.

Showing the counter value on the display

Insert the placeholder %o in any place you like in your Displaying text. The counter value is shown on the display instead of the placeholder. Unit: Hours.

Saving counter values manually

When the machine is shut down in a controlled manner, it is a good idea to save all counter values beforehand.

  • Operating hour counter
  • Timer
  • Counter

As the counter values are only saved every 15 minutes, 15 minutes could otherwise be lost.

Note

The lifetime of the memory is reduced with each saving operation

After a certain number of saving operations, the memory is defective.

  • Do not save the counter values manually more often than is necessary.

Use this procedure to save all counter values in the non-volatile memory:

1. Write the value 1 in the CoE parameter FB00:01hex "Request".
2. Check the value of the CoE parameter FB00:02hex "Status":
Value 255: The saving operation is running.
Value 1: The saving operation was successfully completed.