The problem was that when setting the encoder as a rotary type, the default limit 1 and limit 2 values must be adjusted to be below the modulo value. Other wise an error occurs. Addtionally symmetrical and assymetrical refer to the number of inputs per encoder channel (A,B) so a symmetrical encoder is a differential type with two physical cable lines per channel vs an assymetrical encoder that may only have one line per channel.
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