Beckhoff CX8010, Руководство пользователя

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Mounting and wiring
CX8030 / CX8031 29 Version: 1.6
1. Resistance between A and B at the start of the lead: approx. 110 Ohm
2. Resistance between A and B at the end of the lead: approx. 110 Ohm
3. Resistance between A at the start and A at the end of the lead: approx. 0 Ohm
4. Resistance between B at the start and B at the end of the lead: approx. 0 Ohm
5. Resistance between screen at the start and screen at the end of the lead: approx. 0 Ohm
If these measurements are successful, the cable is okay. If, in spite of this, bus malfunctions still occur, this
is usually a result of EMC interference. Observe the installation notes from the PROFIBUS User
Organization (
www.profibus.com ).
5.2.3.2 PROFIBUS Connection
M12 circular connector
The M12 socket is inverse coded, and has five pins. Pin 1 is 5 V
DC
and 3 is GND for the active termination
resistor. These must never be misused for other functions, as this can lead to destruction of the device.
Pin 2 and pin 4 are the PROFIBUS signals. These must never be swapped over, as this will prevent
communication. Pin 5 is the shield, and this is capacitatively coupled to the Fieldbus Box chassis.
M12 socket pin assignment (-B310)
M12 socket/plug pin assignment (-B318)
Nine pole D-Sub
Pin 6 is 5 V
DC
und Pin 5 is GND for the active termination resistor. These must never be misused for other
functions, as this can lead to destruction of the device.
Pin 3 and pin 8 are the PROFIBUS signals. These must never be swapped over, as this will prevent
communication.