ProSoft Technology PS69-DPS - Manual (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.