Process Data (Pd) - Balluff BMP 01-EL1PP 1A 00-P S75 Serie Manual De Instrucciones

BMP 01-EL1PP _ 1A- _ _ _ _ -00 -P _ _ /P _ _ -S4/P _ _ -S75
Magnetic Field Positioning System
7
IO-Link interface (continued)
7.2

Process data (PD)

The BMP variants output a measurement value and
additional status and switch point information cyclically via
the IO-Link interface.
5 4 3
Measurement value
Tab. 7-2: Process data
Measurement value
The measurement value corresponds to the position of the
target in μm and consists of a signed 32-bit value.
Scaling factor
The scaling factor indicates the factor by which the
measurement value must be multiplied in order to obtain
the value in the SI unit.
The scaling factor is for BMP –6 (0xFA):
Measurement value × 10
−6
Status and SSC
Bit Name Function
7 System Error The BMP no longer functions
(storage error, hardware
defective).
6 Out of Range / The BMP does not detect a target
No Measure- in the detection range.
ment Data
5 Out of The target is located outside of
Measurement the configured measuring range.
Range
4 Measurement The target is located within the
Value Unsafe set measuring range, however the
excess gain is low.
3 SSC 4 Switch information for the fourth
switch point
2 SSC 3 Switch information for the third
switch point
1 SSC 2 Switch information for the second
switch point
0 SSC 1 Switch information for the first
switch point. SSC 1 is placed on
output OUT 1 in SIO mode.
Tab. 7-3: Status and SSCs
18 english
Byte
2 1 0
Status
Scaling
and
factor
SSCs
= Position [m]
In the case of an error, the data is only marked as invalid
using the PD Invalid Bit if the device absolutely cannot
supply valid data.
The IO-Link functionality PD Invalid Bit is
handled differently by different IO-Link masters
(refer to the manual for the respective master).
Detection range
Measuring range
Status bits
1)
Bit 4 0 0 0
Bit 5 0 0 1
Bit 6 1 1 0
See Tab. 7-3
1)
2) If this bit is set, the excess gain is low. The target is magnetized too
weakly or it is too far away from the BMP.
Fig. 7-1: Ranges and output
If the target is located below or above the detection range
and is still detected by the BMP, the measured value is
replaced by the following values:
– Out of range positive: 2'147'483'640 (0x7FFFFFF8)
– Out of range negative: –2'147'483'640 (0x80000008)
In the event of an error (if no valid data can be output), the
measured value is replaced by error value 2'147'483'644
(0x7FFFFFFC).
Position
0/1 0 0 0
2)
0 1 0 0
0 0 1 1