<< Click to Display Table of Contents >> Navigation:  Irinos EC Users Manual > Application Notes > Incremental Encoders > Referencing for absolute measurement

Incremental encoders are not absolute measuring devices. In order to obtain absolute measured values, referencing is always necessary after switching on and after a signal error. The Irinos-Box EC-INC offers the following possibilities for referencing:

oReferencing via index
 
The counter value is set to 0, if the index signal is passed.
 

oReferencing via software:
 
The counter value can be set by software any time. It is possible to set the value 0 as well as to any other value (in the valid value range).

 

Both actions can be performed in conjunction with the NmxDLL and MscDll:

oNmxDLL: NMX_ChannelSetParameter

oMscDLL: Opcode opcSP (0x35)

Please note that the Irinos Box EC-INC can only offer the technical possibility for referencing. The procedure for referencing the measured value depends on the respective measuring procedure. This must therefore already be considered in the planning phase. In particular, consider the procedure after the occurrence of an incremental encoder error.