text: #ifndef INC_SIGNAL_CLASSES_H
  #define INC_SIGNAL_CLASSES_H
  
  #include "crf.h"
  
  typedef enum sig_class_ten {
      SIG_CLASS_SYS = CRF_SIGNAL_CLASS_START,
      SIG_CLASS_MEM,
      SIG_CLASS_CAN,
      SIG_CLASS_CANOPEN
  } sig_class_ten;
  
  #endif