Code Sequence; Class 2 Functionality; Commissioning Diagnostics; Scaling Functions - IFM Electronic RNX-13 Bit Handbuch

3.2.1 Code sequence

The code sequence defines whether increasing position values for shaft revolutions of the encoder is
indicated clockwise or counterclockwise (seen from the shaft). The code sequence is set by means of the
code sequence bit in the operating parameters.
The code sequence is preset to clockwise revolution of the shaft (0).

3.2.2 Class 2 functionality

This bit enables/disables the class 2 functionality.
Class 2 functionality for the Profibus-DP gateway is preset to disabled (0). This means that this control bit
must be activated during configuration to support the functionality of class 2. For the encoders with
integrated Profibus-DP interface presetting is in accordance with the device class selected before.
Note!
If a class 1 encoder uses some optional class 2 functions, the class 2 control bit must be set.

3.2.3 Commissioning diagnostics

The function Commissioning diagnostics enables to check the encoder components responsible for
position detection during a standstill of the encoder (e.g. light unit, photo elements and trigger). In
conjunction with the position alarms it enables thorough checking whether the position values are correct.
The commissioning diagnostics function is started by the commissioning bit in the operating parameters. If
an error is found, this is indicated in the diagnostic function by the commissioning diagnostics alarm bit
(see: chapter 0 Alarms).
The commissioning diagnostics function is an option. To find out whether the encoder supports the
commissioning diagnostics, the "operating status" should be read by the diagnostic function and the
commissioning diagnostics bit be checked.

3.2.4 Scaling functions

The scaling function converts the device-specific physical position value by means of software to change
the resolution of the encoder.
The parameters "Measuring units per revolution" and "Total measuring range in measuring units" are the
scaling parameters set by the parameter function. Scaling is only active if the control bit for the scaling
function is set. When the control bit is set to 0, the scaling function is disabled.
Presetting:
Measuring units per revolution = Singleturn resolution.
Total measuring range in measuring units = Singleturn resolution x number of distinguishable
revolutions.
47