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When using LXM32M with encoder module VW3M3402 is it required to have an index pulse channel?

When using an external AB type encoder connected to LXM32M optional encoder module VW3M3402 there are encoders that do not provide an index pulse channel.
Will these type of encoder work?
The manual for the encoder indicates that the index pulse channel is required, however, this is not fully accurate.

The index pulse channel can be ommitted and the VW3M3402 module will still read the A and B channels. Therefore the index pulse is not required.

It must be noted that any homing method that includes index pulse will not be possible.  (see attachment) 
This is the only limitation.

 
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