1Security Technology PICT les 1

2 Netwerken in productiesystemen

3Security Technology PICT les 1 Automatiseringspiramide ERP (Enterprise Resource Planning) MES (Manufacturing Execution System) SCADA (Supervisory Control and Data Aquasition)

4Security Technology PICT les 1

5 Criteria bij veldbussen n Controle, Event, Data n Snelheid (real time) n Prioriteiten systeem n Betrouwbaarheid / robuustheid n veiligheid n Software / tools / platform n Medium keuze n Voeding distributie n Aansluiting n Bereik n Standaardisering (leveranciers) n Behuizing / vormgeving n Onderhoud n Kosten

6Security Technology PICT les 1 Embedded netwerken Ongeveer 70 microcontrollers in een moderne automobiel

7Security Technology PICT les 1 Applicaties n Automotive (Abus, CAN, DIN, VAN) n Trein, metro en tram (Bitbus, DIN, WTB, IBIS) n Gebouwautomatisering (Batibus, CEBus, EIBus, Homebus, LON) n Procesautomatisering (Bitbus, CAN, FAIS, ISP, Profibus) n Aandrijftechniek (Drivecom, Encom, Profibus/DP, Sercos) n Embedded systems (I 2 C-bus, CAN, Microwire, Open-Access Bus) n Sensor/Actuator (AS-I, CAN, Profibus/DP, Sensorbus) n Landbouw (DIN, LBS) n Overigen (Arinc, C-Mac, Midi, Mil- Std 1553, Batterybus)

8Security Technology PICT les 1 Netwerk typeringen n Master / Slave relatie; wie neemt initiatieven (Single master / multple slave, Multiple master / Multiple slave ?) n Client / Server (request, response) n Producer / Consumer Toegang tot het medium Communicatie over het medium

9Security Technology PICT les 1 I 2 C bus n Designed for low-cost, medium data rate applications. n 100 – 400 kbits/sec n Characteristics: n serial; n multiple-master (vaak single-master gebruikt); n fixed-priority arbitration. n fixed addresses (7- or 10-bits, some reserved) n Several microcontrollers come with built-in I 2 C controllers.

10Security Technology PICT les 1 I 2 C physical layer master 1master 2 slave 1slave 2 SCL SDL data line clock line

11Security Technology PICT les 1 I 2 C electrical interface SDL + Open collector interface: SCL +

12Security Technology PICT les 1 I 2 C data link layer n Every device has an address (7 bits in standard, 10 bits in extension). n Bit 8 of address signals read or write.

13Security Technology PICT les 1 I 2 C bus arbitration (Collision Avoidance) n Sender listens while sending address. n When sender hears a conflict, if its address is higher, it stops signaling.

14Security Technology PICT les 1 CAN Controller Area Network (Bosch) n Producer / Consumer model n Bus Arbitration (CSMA/Arbitration on Message Priority) n Remote Transmission Request Deterministic ( < 2 ms, real time) n Error Detection Speed max. 1 Mbit/s (< 40m) n Cable length max. 10 km (5kb/s) n 128 nodes / subnet

15Security Technology PICT les 1 Producer / Consumer CAN Station 1 (Consumer) CAN Station 2 (Producer) CAN Station 3 (Consumer) CAN Station 4 (Consumer) Frame I Local Intelligence Local Intelligence Local Intelligence Local Intelligence bus lines Filter

16Security Technology PICT les 1 CAN frame

17Security Technology PICT les 1 node 1 listening only node 2 listening only node 3 bus-level Node 3 wins arbitration and transmits his data. S R O Identifier T Control Data F R Field Field CAN Bus Arbitration Method dominant recessive

18Security Technology PICT les 1 Profibus

19Security Technology PICT les 1 Tentamenstof hoofdstuk 10, 15, 16