Prosoft-technology PS69-DPS User Manual download pdf (Page 101)

PS69-DPS ♦ CompactLogix or MicroLogix Platform Reference

Profibus DP Slave Communication Module User Manual

ProSoft Technology, Inc. Page 101 of 108

May 9, 2014

Bus Begin and Bus End

The PROFIBUS connector with termination is required at the beginning and the

end of the bus. These connectors emulate the line impedance.

It is recommended that at least one connector with diagnostics interface is used.

Wiring diagram for a PROFIBUS DP cable

Grounding and Shielding for Systems with Equipotential Bonding

Each cable shield should be galvanically grounded with the earth using FE/PE

grounding clamps immediately after the cable has been connected to the cabinet.

This example indicates the shielding connection from the PROFIBUS cable to the

FE/PE rail.

Note: An equalization current can flow across a shield connected at both ends because of

fluctuations in ground potential. To prevent this, it is imperative that there is potential equalization

between all the attached installation components and devices.

This example indicates the system components and devices in a system with

equipotential bonding.

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Prosoft-technology PS69-DPS User Manual Page 101