SM0: PhysAddr 0x1000, DefaultSize  128, ControlRegister 0x26, Enable 1
SM1: PhysAddr 0x1400, DefaultSize  128, ControlRegister 0x22, Enable 1
SM2: PhysAddr 0x1800, DefaultSize    2, ControlRegister 0x24, Enable 1
  RxPDO 0x1601 "DO RxPDO-Map"
    PDO entry 0x7010:01,  1 bit, "LED 1"
    PDO entry 0x7010:02,  1 bit, "LED 2"
    PDO entry 0x7010:03,  1 bit, "LED 3"
    PDO entry 0x7010:04,  1 bit, "LED 4"
    PDO entry 0x0000:00, 12 bit, "Gap"
SM3: PhysAddr 0x1c00, DefaultSize    6, ControlRegister 0x20, Enable 1
  TxPDO 0x1a00 "DI TxPDO-Map"
    PDO entry 0x6000:01,  1 bit, "Switch 1"
    PDO entry 0x6000:02,  1 bit, "Switch 2"
    PDO entry 0x6000:03,  1 bit, "Switch 3"
    PDO entry 0x6000:04,  1 bit, "Switch 4"
    PDO entry 0x0000:00, 12 bit, "Gap"
  TxPDO 0x1a02 "AI TxPDO-Map"
    PDO entry 0x6020:01,  1 bit, "Underrange"
    PDO entry 0x6020:02,  1 bit, "Overrange"
    PDO entry 0x6020:03,  2 bit, "Limit 1"
    PDO entry 0x6020:05,  2 bit, "Limit 2"
    PDO entry 0x0000:00,  8 bit, "Gap"
    PDO entry 0x1802:07,  1 bit, ""
    PDO entry 0x1802:09,  1 bit, ""
    PDO entry 0x6020:11, 16 bit, "Analog input"