00195193-02 SG D4 FSE en (1).pdf - 第76页
Communication and Control Machine Controller Communication CAN Bus Student Guide SIPLACE D4 (FSE) EN 09/2006 Communica tion and Control 75 4.3 CAN Bus The developmen t of Controller Area Networks began as modern veh icle…
Communication and Control
Network Machine Controller Communication
Student Guide SIPLACE D4 (FSE)
Communication and Control EN 09/2006
74
4.2.4 Machine Controller Communication
When calculating the pickup coordinates, the machine controller adds the pickup correction values
(previously known as pickup offsets) to the pickup coordinates. When calculating the placement
coordinates, the machine controller adds the board position and component correction values to the
placement coordinates.
4.2 - 5: Communication with MC
Communication and Control
Machine Controller Communication CAN Bus
Student Guide SIPLACE D4 (FSE)
EN 09/2006 Communication and Control
75
4.3 CAN Bus
The development of Controller Area Networks began as modern vehicles were controlled, monitored and
equipped with electronic controls and comfort features. Examples of such devices include engine
management systems, active suspension, ABS, gear control, lighting control, air conditioning, airbags
and central locking.
4.3 - 1: Communication via cable connection
4.3 - 2: Communication e.g. on Siplace S15 machine
To improve the behavior of the vehicle even further, it was necessary for the different control systems
(and their sensors) to exchange information. This was usually done by discrete interconnection of the
different systems (i.e. point to point wiring). The requirement for information exchange has then grown
to such an extent that a cable network with a length of up to several miles and many connectors was
required. This produced growing problems concerning material cost, production time and reliability.
The solution to this problem was the connection of the control systems via a serial bus system. This bus
had to fulfill some special requirements due to its usage in a vehicle. With the use of CAN, point-to-point
Communication and Control
CAN Bus Machine Controller Communication
Student Guide SIPLACE D4 (FSE)
Communication and Control EN 09/2006
76
wiring is replaced by one serial bus Each module is given a CAN Bus connection. This is accomplished
by adding some CAN-specific hardware to each control unit that provides the ’rules’ or protocol for
transmitting- and receiving information via the bus.
4.3 - 3: Communication via CAN bus on example car controlling
4.3 - 4: Communication via CAN bus on example car controlling