Hubner AMP 41, Operating And Assembly Instructions Manual

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Absolute Encoder AMP(H) 41
AMP(H)41_MANUAL-en_R11 - 2019-03-28 43
6.6.2.2 Output data
6.6.2.2.1 Control1
Unsigned16
Byte X+0 X+1
Bit 15 – 8 7 – 0
Data 2
15
– 2
8
2
7
– 2
0
Bit Description
2
0
Preset_Request
The bit serves to control the preset adjustment function. When this function is
executed, the measuring system is set to the position value stored in the
Preset Multi-Turn/Preset Single-Turn
registers. A precise sequence
must be observed in order to execute the function, see chapter 10 “Preset
Adjustment Function” on page 80.
2
1
…2
15 Reserved
6.6.2.2.2 Control2
Reserved.
6.6.2.2.3 Preset Multi-Turn / Preset Single-Turn
Preset Multi-Turn, Integer16
Byte X+4 X+5
Bit 15 – 8 7 – 0
Data 2
15
– 2
8
2
7
– 2
0
Preset Single-Turn, Integer 16
Byte X+6 X+7
Bit 15 – 8 7 – 0
Data 2
15
– 2
8
2
7
– 2
0
As only 16-bit registers have previously been possible on the control side, the preset value to
be written must be calculated first. The desired preset value must be in the range of 0 to
268 435 455 (28 bit). Together with the measuring system resolution, max. number of steps per
revolution according to type plate (8192), the corresponding values for
Preset Multi-
Turn/Preset Single-Turn
can then be calculated:
Number of revolutions = desired preset value / steps per revolution
The integer part from this division gives the number of revolutions and must be entered in the
Preset Multi-Turn
register.
Single-Turn-Position = desired preset value – (steps per revolution * no. of revolutions)
The result of this calculation is entered in the
Preset Single-Turn
register.
The preset value is set as new position when the preset adjustment function is executed, see
chapter 10 “Preset Adjustment Function“ on page 80.