ifm electronic RN3001 - Manual (Page 11)

UK
Encoder with Profibus interface
11
When the [Total measuring range] parameter is entered, use the following formula:
total resolution < measuring steps per revolution x number of revolutions
(physical)
If this is not observed, the device indicates a parameter fault and does not go into the cyclic data
exchange�
The internal software routine is only effective during operation�
9.3 Data exchange during normal operation
The DDLM_Data_Exchange mode is the normal status during system operation�
On request, the encoder sends current position values to the master� Conversely,
the encoder can also receive cyclic data (e�g� the preset value with Class 2
encoders)�
9.3.1 Transfer of the process actual value
The current position value of the multiturn encoder is transferred as a 32-bit value
(double word) to the master�
Word Word 1 Word 0
Function Process actual value
Bit 31���30 29���16 15���0
0 X X