Baumer G1-G2-G0-GE-GB-GXxxx - Manual (Page 11)

Manual_DeviceNet_BIDE_EN.docx 11/18 Baumer IVO GmbH & Co. KG
22.11.12 Villingen-Schwenningen, Germany
9 Encoder position object
The encoder position object is a manufacturer-specific object. The class code is 2Fh.
Instance attributes
Due to their differing functionality, the instance attributes are subdivided into two groups.
The first group, attribute I to 12, contains the parameters for position calculation.
The second group, attribute 80 to 95, contains the diagnostic functions.
Changed parameters are only saved in the non-volatile memory by the "save" service.
Table: Parameters for position calculation
Attribute ID Access Name Data type Description Values
1 read No. of attributes USINT Number of supported attributes
2 read Attributes Array of
USINT List of supported attributes
3 read/
write Sense of rotation BOOL Setting the sense of rotation 0 = CW
1 = CCW
4 read Internal diagnostic
function BOOL Not used 0 = OFF
5 read Scaling function BOOL Activation of the scaling
function 1 = ON
6 read Position format USINT Format of the position value 0 = Steps
7 read/
write Steps per turn UDINT Number of required steps per
turn See op.
parameters
8 read/
write Total resolution UDINT Number of required steps over
the measurement range See
operating
parameters
9 read Reserved UDINT Reserved = 0
10 read/
write Preset value UDINT The position value is set to the
preset value See op.
parameters
11 read/
write COS delta DINT Minimal position change value
in the COS mode 1 to overall
resolution
12 read Position value DINT Current position value 1 to overall
resolution
Steps per turn
The parameter "Steps per turn" defines the number of steps per revolution. If this parameter is set, the overall
resolution is changed according to the following formula:
Total resolution = Steps per turn x turns
Sense of rotation
The sense of rotation defines whether the position values of the encoder increase when rotation takes place
clockwise (CW) or counter clockwise (CCW) when looking at the shaft.
Total resolution in steps
The parameter "Total resolution in steps" defines the total number of steps over the entire measurement
range.
Example:
Steps per turn = 3600; Turns = 256;  Total resolution = 3600 x 256 = 921600
If the number of turns is programmed as a value not equal to 2
n
(1, 2, 4,...65536), parameterizing will have to
be done anew as soon as the encoder's zero point has been exceeded in powerless state .