Baumer EA Series User Manual

Baumer_EAx_EtherNetIP_EN_MNL 40/81 www.baumer.com
02.20
7.6.12. Important note for multiturn encoder operation
„Endless operation“ is automatically supported where required.
Thus, there are no special requirements for the encoder parameters “total measuring range” and “measuring
units per revolution” to stand in a certain ratio.
When endless operation is active and the encoder is unpowered the encoder shaft may rotate max. ¼
of the number of maximum possible revolutions. For an encoder with max. 65536 (2
16
) revolutions
(equals 16 „multiturn bits“) this would be 16384 (2
14
) revolutions. For an encoder with 13 „multiturn bits“ this
then would be 2048 (2
11
) revolutions. If this number of revolutions is exceeded the encoder has to be
referenced (execute Preset function) after every power-up. When endless operation is inactive the encoder
shaft may rotate unlimitedly when the encoder is not powered (without influence on the position value).
How to determine if „Endless Operation“ is in use together with given parameters:
 multiply the encoder’s „max. possible revolutions“ (depending on encoder type: for 16 bits the value is
65536, for 13 bits the value is 8192) by the value of parameter „measuring units per revolution“
 divide this value by the value of parameter „total measuring range“
 if there is a division remainder endless operation is in use
Example for parameters without endless operation:
Maximum possible revolutions 65536 (16 bits multiturn)
Measuring units per revolution 3600
Total measuring range 29491200
Calculation: 65536 x 3600 / 29491200 = 8 (no remainder)
Example for parameters with endless operation:
Maximum possible revolutions 65536 (16 bits multiturn)
Measuring units per revolution 3600
Total measuring range 100000
Calculation: 65536 x 3600 / 100000 = 2359 (remainder 29600)
7.6.13. Preset
Please refer to Preset function.
7.6.14. Parameterization sequence
Please proceed in the following sequence:
- write Instance Attribute 12 - Direction Counting Toggle
- write Instance Attribute 17 - Total Measuring Range in Measuring Units
- write Instance Attribute 16 - Measuring Units per Span
- use “Apply Service” of Position Sensor Object (0x23)
- move shaft of encoder to desired reference position
- write Instance Attribute 19 - Preset Value
See Position Sensor Object (0x23) for details.

Baumer EA Series Specifications

General

Brand	Baumer
Model	EA Series
Category	Media Converter
Language	English