Temperature Sensing; Threshold Values For Temperature Warning; Sensor Operating Hours; Boot Cycle Counter - Balluff BML SL1-ALZ0-U1ZZ-U1L-S284 Notice D'utilisation

BML SL1-ALZ _ -U_ ZZ- _ U1L - _ _ _ _
Absolute magnetic encoder system
7
IO-Link Smart Sensor Profile Ed. 2 (BML SL1-ALZ1-UE/MZZ-_U1L-...) (continued)
7.5.6

Temperature sensing

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 service
life
Maximum temperature
5 over the entire service
life
Tab. 7-13: Structure of the temperature values
The temperature sensor detects the
temperature within the BML. This is always
higher than the ambient temperature.
7.5.7

Threshold values for temperature warning

The BML allows you to define the following temperature
threshold (Index 0x0053 (83)):
Subindex Name
Threshold for minimum
1
temperature exceeded
Threshold for maximum
2
temperature exceeded
Tab. 7-14: Structure of the threshold values
The thresholds can be set within a range of –25...+125 °C
(internal temperature).
When these threshold values are violated the BML issues a
warning (see Event list on page 39).
If the internal temperature of the BML exceeds
BML 95 °C, an Overtemperature error is output.
36 english
7.5.8
The operating hours are acquired within the BML and
permanently stored in hour intervals (Index 0x0057 (87)).
Length Access Subindex
Read
2 bytes
Only
Read
2 bytes
Only
Read
2 bytes
Only
Tab. 7-15: Structure of the operating hours
Read
2 bytes
The system command Reset Maintenance (0xA5) resets
Only
the sensor operating hours for maintenance to zero.
Read
2 bytes
7.5.9
Only
Each time the BML is reinitialized it increments the
permanently stored boot cycle counter. Both a system
command Device Reset and a hardware reset will
increment the counter.
The 32-bit value can be read out from Index 0x0058 (88),
Subindex 0.

7.5.10 Signal quality

(available only for BML SL1-ALZ1-UEZZ-_U1L-...)
Length Access
The signal quality indicates the quality of the measurement
signal from 0...100%. A value of 255% (0xFF) means the
Read/
2 bytes
signal quality is undetermined. The signal quality (Index
Write
0x00CF) is output as follows:
Read/
2 bytes
Write
Subindex
Tab. 7-16: Signal quality structure
The Reset Maintenance command resets all signal quality
parameters.

Sensor operating hours

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

Boot cycle counter

Name
1 Current signal quality
2 Maximum signal quality
3 Minimum signal quality
Position of the
4
maximum signal quality
Position of the
5
minimum 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