Temperature Detection; Threshold Values For The Temperature Warning; Operating Hours Counter; Boot Cycle Counter - Balluff BML SL1-ALZ-ZZ Serie Manual De Instrucciones

BML SL1-ALZ _-_ _ ZZ- _ _ _ _ - _ _ _ _
Absolute Magnetically Coded Position Measuring System
7
IO-Link Smart Sensor profile Ed. 2 (BML SL1-ALZ1-UE/MZZ-_U1L-...) (continued)
7.5.5

Temperature detection

The following temperature values are output by the BML as
signed 16-bit values in units of °C (Index 0x0052 (82)):
Subindex Name
1 Current temperature
Minimum temperature
2
since start of operation
Maximum temperature
3
since start of operation
Minimum temperature
4
over the entire lifetime
Maximum temperature
5
over the entire lifetime
Tab. 7-12: Structure of the temperature values
The temperature sensor detects the
temperature within the BML. This is always
higher than the ambient temperature.
7.5.6

Threshold values for the temperature warning

The BML allows you to define the following temperature
warning threshold (Index 0x0053 (83)):
Subindex Name
Threshold for
1
temperature exceeded
Threshold for exceeded
2
temperature
Tab. 7-13: Structure of the threshold values
The thresholds can be set in a range of –25...+85 °C.
If these thresholds are exceeded or undershot, the BML
issues a warning (see Event list on page 35).
If the internal temperature of the BML exceeds
95 °C, an Overtemperature error is output.
32 english
7.5.7
The operating hours are recorded inside the BML and
permanently stored (Index 0x0057 (87)).
Length Access Subindex
Read
2 bytes
Only
Read
2 bytes
Only
Read
2 bytes
Only
Read
Tab. 7-14: Structure of the operating hours
2 bytes
Only
The system command Reset Maintenance resets the
operating hours counter to zero for maintenance purposes.
Read
2 bytes
Only
7.5.8
The BML increments the permanently stored boot cycle
counter each time it is re-initialized. Both a system
command Device Reset as well as a hardware restart
result in the counter being incremented.
Use Index 0x0058 (88), Subindex 0 to read the 32-bit
value.
7.5.9
Length Access
(only available for BML SL1-ALZ1-UEZZ-_U1L-...)
Read/
2 bytes
The signal quality shows the quality of the measurement
Write
signal from 0...100%. If the value is 255% (0xFF), the
Read/
signal quality is unknown. The signal quality (Index 0x00CF)
2 bytes
Write
is output as follows:
Subindex
Tab. 7-15: Structure of the signal quality
Use the system command Reset Maintenance to reset all
signal quality parameters.

Operating hours counter

Name
Operating hours over the
1
entire lifetime
Operating hours since
2
the last maintenance
Operating hours since
3
the last power-on

Boot cycle counter

Signal quality

Name
1 Current signal quality
2 Maximum signal quality
3 Minimum signal quality
Position off the maximum
4
signal quality
Position off the minimum
5
signal quality
Length Access
Read
4 bytes
Only
Read
4 bytes
Only
Read
4 bytes
Only
Length Access
Read
1 byte
Only
Read
1 byte
Only
Read
1 byte
Only
Read
4 bytes
Only
Read
4 bytes
Only