MA10/4-S
Date: 21.02.2019 Page 22 of 28 Art.No. 87181 Mod. status 50/19
Telegram example
Master requests position value from device 7
Master sends (hex): 87 16 91
Short telegram to address 7 (87h); read out position value (16h); check byte (91h)
MA10/4 replies (hex): 07 16 03 02 00 10
Long telegram from address 7 (07h); read out position value (16h); value 203h = 515 dec (03 02
00h); check byte (10h).
9 Application examples for speed
9.1 How to display revolutions/minute (rpm)
Precondition:
Value programmed under "Encoder pulses per rev." (_incr_), must be identical to the pulse
number of the encoder.
Cycle time is to be adapted to the encoder's increments and the speed (encoder with few
increments --> high cycle time; encoder with many increments --> low cycle time).
Resolution 1 U/rpm: Factor = 1.0000
Resolution 0.1 U/rpm: Factor = 10.0000
That means: with each decreasing power of 10 of the factor, the resolution decreases by
0.1 mm.
9.2 How to display Hz (s
-1
)
Precondition:
Parameter 'Encoder pulses per rev.' must be programmed to "0"; display interpretes incoming
values 1:1.
Resolution 10 Hz : cycle time = 0.1 s
Resolution 1 Hz : cycle time = 1 s
Resolution 0.1 Hz: cycle time = 10 s
9.3 Some practise application examples
The following three application examples show programming / application of the MA10/4
'Speed'. Please study these application examples; this will facilitate and clarify the display's
handling.
Example 1:
Use of the MA10/4 on a plate saw together with an incremental encoder with 16 pulses. A
measuring wheel with 200 mm circumference is fixed on the encoder's shaft. Via encoder and
measuring wheel the plate's feed rate is to be displayed in m/min. A resolution of 10 cm/min
(corresponds to one position after the comma) is required.
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