The modulo is applicable with an infinite machine when position measurement moves between 0 and modulo.
Measurement progresses as follows:
For the Max Modulo parameter you must enter the modulo value in encoder points. The equivalent in user units is displayed automatically in the following field.
Max. Modulo thus defines the hi limit authorized for the adjustable Modulo parameter. The values which can be entered for Modulo and the associated parameters depend on the encoder type used.
The modulo is always a power of 2 because it is defined by the number of data bits from the SSI Frame encoder. Thus, rather than entering the number of modulo bits, you must enter the corresponding power of 2.
For example, for a max modulo of 4096, you must enter the value 12 (because 4096 = 212).
Limits According to Resolution
The limit values of Max. Modulo are also limited according to the value of the chosen resolution:
Encoder type
|
Limits
|
Incremental encoder
|
1000 -> 6 x 108 / RESOL
limited to 16 x 106
|
Absolute encoder
|
n: 12 -> 23 (under condition 2n x RESOL < 6 x 108)
|