Symmetrical encoder module -1088130 AXL SE INC1 SYM

Hi, I am using symmetrical encoder module, to control the position of stepper motor with external encoder (1000 ppr).

  1. I want to know in encoder module, in data list tab, INC_value tells you about what ?
  2. In the image attached below, it has given the encoder resolution range. I am using external encoder with stepper motor and that encoder has a resolution of 1000 ppr. So do I need to use 1000 or I can use any value ?