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Wiring
PROFIBUS DP interface
Socket X51
9
6
6.5.4.1
Wiring guidelines for the CANopen interfaces
The CAN network is designed in a linear structure.
The overall line length and the length of the stub lines depend on the transmission rate
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and on the cable properties (cable resistance and cable capacitance).
The signal lines must be terminated with resistors on the first and last subscriber.
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A characteristic impedance of 120 Ohm is acceptable for bus lengths up to 40 m.
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A terminating resistor is permanently installed between Pin 2 and Pin 7.
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Fig.: Overall length and length of the stub lines on a CAN network.
Legend:
Node: CANopen subscriber
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a: Length of stub line
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A: Branch
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R
: Terminating resistor
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T
Operating Manual PMCprimo MC
1003813-EN-03
Pin
Designation
1
n. c.
2
n. c.
5
3
RxD/TxD-P
4
n. c.
5
GND
1
6
+5 VDC / 50mA
7
n. c.
8
RxD/TxD-N
n. c. = not connected
Node 2
Node 1
A
W
R T [
]
Description
n. c.
n. c.
PROFIBUS B cable
n. c.
Ground
Supply voltage for terminating
resistors
n. c.
PROFIBUS A cable
Node n-1
a
Node 3
A
l
Node n
R T [
W
]
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