70
english
6.7
Operating Hours Counter
6.7.1 Description
The operating hours counter can record the operating
hours of a device accurately to the second. There are a
total of three operating hours counters. In addition to an
operating hours counter for the operating hours since the
start of the device, there is a total operating hours counter
and a customer-specific operating hours counter that can
be reset. The storage interval is configurable and the
operating hours are not stored once 500000 storage
cycles have been reached.
The output of the operating hours can serve as a time
control for the service interval as well as for preventative
maintenance. Schedules for regular service can be tied to
the operating hour values. Moreover, a high value of the
total operating hours is indicative of intensive use of a
device and possible deterioration of the performance. The
risk of failure can be countered preventatively through
replacement.
6.7.2 Algorithm
While the counter is incremented every second, the
storage interval doubles after each save operation. Starting
with a save operation after 1 minute, then after 2 minutes,
then after 4 minutes, then after 8 minutes, up to a
maximum storage rate of 12 minutes.
6.7.3 Process Data
Object ID
Name
Description
Direction
0x001B (27)
Current Operating Hours
Output of the current operating hours counter
Input
0x001C (28)
Total Operating Hours
Output of the total operating hours counter
Input
0x001D (29)
Custom Operating Hours
Output of a user-defined operating hours counter
Input
Tab. 6-36: Operating hours counter – Process data
6.7.4 ISDU
Name
Index
Subindex
Access
Length
Data Type
Data
Storage
Default
Operating Hours Counter
0x0057 (87)
0
R
12 bytes
n/a
Current Operating Hours
1
R
4 bytes
UINT32
n/a
–
Total Operating Hours
2
R
4 bytes
UINT32
n/a
–
Custom Operating Hours
3
R
4 bytes
UINT32
n/a
–
Operating Hours Saving
Mode
0x0074 (116)
0
R/W
1 byte
UINT8(ENUM)
Yes
0
Tab. 6-37: Operating hours counter – ISDU
The maximum number of storage cycles is
500,000 and, with a switch-on and switch-off
every 12 minutes (with static counter), this means
a service life of over 10 years.
If switched on and off more frequently or in the
case of dynamic storage, the maximum storage
time is reduced depending on the application.
6
Secondary Device Functions (continued)
BOS R254K-UUI-RH10-S4
Photoelectric Sensors
Summary of Contents for BOS R254K-UUI-RH10-S4
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