PowerMeasuringModule PMM
35,0(
54
Revision 13 EN - 02/2023
Fixed value (ReadOnly) Unit Length Type Address
Measurement finished statusbyte1.Bit 2 Bool > 5 Hz 0:2
Absorber too hot statusbyte1.Bit 3 Bool > 5 Hz 0:3
PMM is idle statusbyte1.Bit 4 Bool > 5 Hz 0:4
Irradiation failure statusbyte1.Bit 5 Bool > 5 Hz 0:5
Start acknowledged statusbyte1.Bit 6 Bool > 5 Hz 0:6
Shutter acknowledged statusbyte1.Bit 7 Bool > 5 Hz 0:7
Shutter is open statusbyte2.Bit 0 Bool > 5 Hz Byte 1:0
Shutter is closed statusbyte2.Bit 1 Bool > 5 Hz 1:1
Shutter is moving statusbyte2.Bit 2 Bool > 5 Hz 1:2
Shutter time-out statusbyte2.Bit 3 Bool > 5 Hz 1:3
Shutter error angle sensor statusbyte2.Bit 4 Bool > 5 Hz 1:4
1:5
Command
Commandbyte (write only) 1 byte Set to default
Start measurement Commandbyte Bit 0 Bool 0:0
do open shutter Commandbyte Bit 1 Bool 0:1
do close shutter Commandbyte Bit 2 Bool 0:2
do_reset Commandbyte Bit 7 Bool 0:7
Tab. 11.2: Registry settings overview
11.2 Configuration data
The configuration data includes all parameters that are factory set and that inform about the possibilities the
device offers.
MaxCapacity Max. energy (= thermal capacity) the absorber can absorb starting with 20°C up to
the max. temperature. This value is given for information only and is not needed for any
calculations.
Minimum irradiation time Is given for information only and is not needed for any calculations.
Maximum irradiation time Should not be exceeded, as the determination of the energy content of the absorber
would then show inaccuracies.
Maximum power Shows the max. laser beam power, the absorber can be irradiated with. In case the
power is exceeded, the absorber can be damaged.
Minimum energy The laser has to generate a sufficient increase in temperature for a measurement with
the desired accuracy. To achieve this, a minimum amount of energy is needed. This
value is given by the formula: t
Irradiation
> Minimum energy / P
Laser
Minimum absorber tem-
perature
The minimum temperature of the absorber currently has no importance for this mea-
surement system.
Maximum absorber tem-
perature
No measurements can be carried out if the absorber temperature lies above the “max.
absorber temp.” as the absorber would overheat otherwise.
Pulse duration Measure-
ment avail.
This constant shows whether the integrated pulse duration measurement is available.
Only for devices with AP3s marking on the identification plate.
Tab. 11.3: Overview configuration data
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