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