The Multiplexing Network is a digital communication between logic modules with only one or two data wires connected to all the modules. Modules are connected together in either series or parallel circuits. Used no sensors or actuators, and “Gateway” module would be one that can translate different speeds from one group to another.
COMMUNICATION WIRE: H-CAN and L-CAN
A – (High) CAN -1 H CAN2 Blue
B – (Low) CAN – 4 L CaN5 Yellow
The two wire CAN H and CAN L. For the CAN to communicate one is to pulls the voltage up to about 5v. The other pulls the connection to earth and as result the voltage is pulled up and down. This creates the language between the two wires (CAN)
No codes created (start to finish)
This shows protocol without code creates, both Low and High pattern has not switch on or disturbing the signal. Looking at the pattern the two wires mirror each other equally. One is slightly higher than the other.
Describe the relationship between the two patterns and their base voltages (what volts when not switched)
Both wire share the minimum of 5volts. The two patterns are communicates by (talk) toggling the voltage up and down in digital language.
For each of the following inputs capture the pattern and identify were it changes in relation to the original pattern:
right indicator
We started with sending a code through the node to communication wire, as the right indicator switches on the signal pattern made the change. The green circle known as Low voltage wire show more speed than the High signal wire (red circle).
left indicator
The left indicator we suggest that both right and left code give different code and the picture shows is the opposite of the right indicator
Our next code is rear wiper when this switch on, the metal plate which attach to a wiper motor start to turn. If we look close at the pattern of this signal communication the two wire change at the end of the frame. As you can see on the drawing this indicate the different between the two pattern.
stop-light
As the code is transfer from one node to another the brake light comes on and the pattern signal message change from these location. Multiplex in brake light circuit are wired to the nearest module that gets a message from another module (cem), that gets a request from a switch, and turning the brake light on.
fuel pump
The lights turn on and the fuel pump is working. We show some digital give small change in this frame, but not much of a code which is respond to connection wires.
Reverse lights
When the reverse light switches on the request code is determine by the nodes, where the message is than translate and deliver through CAN.
Using the wiring diagram and CAN board Identify the input /output pins, wire colour, Relay or transistor for the right hand indicator and rear wiper:
Right Indicator: (INPUT) Pin #7 = (Zener diode) Pin #6 = (output) IC9 = (A) Relay 18F258
Rear Wiper: (ground) Pin #9 and Pin #8 to Pin #25 (RB4/18F258) =314
(Output) Pin #GP6 = Pin #10 – (Resistor) 35 – (Transistor) BC547 –
Using the wiring diagram identify both voltage regulators that resemble the one that you built in TTEC4824. Note all the input pins and were the outputs are connected to
1 UI 7805: Input (supply voltage) Pin #1 and Pin #2
2 VI U2+5v (7805 GND): Output C18/0.luf Capacitor to Pin #14VDD
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