SM0: PhysAddr 0x1800, DefaultSize  128, ControlRegister 0x26, Enable 1
SM1: PhysAddr 0x1a00, DefaultSize  128, ControlRegister 0x22, Enable 1
SM2: PhysAddr 0x1000, DefaultSize    0, ControlRegister 0x24, Enable 1
  RxPDO 0x0018 "MDT"
    PDO entry 0x0086:00, 16 bit, "Master control word"
    PDO entry 0x002f:00, 32 bit, "Position command value"
SM3: PhysAddr 0x1100, DefaultSize    0, ControlRegister 0x22, Enable 1
  TxPDO 0x0010 "AT"
    PDO entry 0x0087:00, 16 bit, "Drive status word"
    PDO entry 0x0033:00, 32 bit, "Position feedback 1 value"
    PDO entry 0x00bd:00, 32 bit, "Following distance"
SM4: PhysAddr 0x2000, DefaultSize    0, ControlRegister 0x24, Enable 1
SM5: PhysAddr 0x2400, DefaultSize    0, ControlRegister 0x20, Enable 1