CD522

• The CD522 module only reports analogue IOs even though it has also binary inputs / outputs.

• It uses the following IO data structure:

  Inputs

  • State S0/S1 % pulse (2 bytes)
  • State byte / inputs counter 0 (2 bytes)
  • TOUCH counter 0 value high word (2 bytes)
  • TOUCH counter 0 value low word (2 bytes)
  • 32 bit counter 0 high word (2 bytes)
  • 32 bit counter 0 low word (2 bytes)
  • 32 bit counter 1 high word (2 bytes)
  • 32 bit counter 1 low word (2 bytes)
  • Reserved (2 bytes)
  • State byte / inputs counter 1 (2 bytes)
  • TOUCH counter 1 value high word (2 bytes)
  • TOUCH counter 1 value low word (2 bytes)

  Outputs

  • PWM frequency 0 high-word (2 bytes)
  • PWM duty/cycle/pulse 0 low word (2 bytes)
  • PWM control byte C0 / reserved (2 bytes)
  • Reserved (2 bytes)
  • PWM frequency 1 high-word (2 bytes)
  • PWM duty/cycle/pulse 1 low word (2 bytes)
  • PWM control byte C1 / outputs (2 bytes)
  • Reserved (2 bytes)
  • Counter 0 settings high word (2 bytes)
  • Counter 0 settings low word (2 bytes)
  • Counter 0 control byte / counter (2 bytes)
  • Reserved (2 bytes)
  • Counter 1 settings high word (2 bytes)
  • Counter 1 settings low word (2 bytes)
  • Counter 1 control byte / counter (2 bytes)
  • Reserved (2 bytes)

• The IO data of the CD522 have to be mapped continuously in ascending order (without gaps or other IO data inbetween) beginning with a new PDO.

  For an example see the following picture:

  • AnalogueInput16Bit_5 to AnalogueInput16Bit_16 are the inputs of the CD522.
  • AnalogueOutput16Bit_3 to AnalogueOutput16Bit_18 are the outputs of the CD522.