ifm electronic RN3001 - Manual (Page 9)

UK
Encoder with Profibus interface
9
9.2 Parameter setting
The following table gives an overview of the parameters that can be set according
to the encoder profile and of the arrangement in the parameter setting telegram�
Parameters are set using input masks in the projection tool�
Octet (= byte) no. Parameters Bit no. Details
1���8 Profibus standard parameters
9 Direction of rotation 0 → Chapter 9.2.1
Class 2 functionality 1 → Chapter 9.2.2
Commissioning diagnostics 2 → Chapter 9.2.3
Scaling function 3 → Chapter 9.2.4
Reserved 4
Reserved 5
Not used for Class 1 and Class 2 6
7
10���13 Measuring steps / revolution → Chapter 9.2.5
14���17 Total resolution → Chapter 9.2.6
18���25 Reserved (to encoder profile)
26��� Not used for Class 1 and Class 2
Rotational direction
The direction of rotation defines the counting direction of the process actual value
output when the shaft rotates clockwise (CW) or counter-clockwise (CCW)� The
counting direction is defined by bit 0 in octet 9�
Octet 9 bit 0 Direction of rotation when viewing the shaft Direction of
rotation
0 Clockwise (CW) Rising
1 Counter-clockwise (CCW) Rising
9.2.1 Class 2 functionality
Class 2 encoders can be limited to the functionality of Class 1; the possibility of
parameter setting is disabled� To use the function of Class 2 encoders, bit 1 is set
in octet 9�
Octet 9 bit 1 Class 2 functionality
0 Disabled
1 Enabled
9.2.2 Commissioning diagnostics
This function is of no meaning for the ifm encoder�