Lenze PROFIBUS Controller-based Automation - Manual (Page 26)

6 Commissioning of PROFIBUS
6.2 Detailed commissioning steps
26
Lenze · Controller-based Automation · PROFIBUS® Communication Manual · DMS 4.3 EN · 04/2014 · TD17
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
6.2 Detailed commissioning steps
In the following sections, the individual commissioning steps are described.
Follow the instructions of these sections step by step in order to commission your system.
6.2.1 Planning the bus topology
Before installing a PROFIBUS network, make a diagram of the network.

How to plan the bus topology for your configuration
1. Create an overview of the planned PROFIBUS network with all field devices to be
integrated.
2. Start with the Lenze Controller (master).
3. Add the other field devices (slaves) below.
6.2.2 Installing field devices
For the installation of a field device, follow the mounting instructions for the respective device.
Activating the bus terminating resistor
PROFIBUS must be terminated at the first and last physical station by a bus terminating resistor.
The bus terminating resistor in the bus connector of the bus cable is activated by means of a switch.
PROFIBUS cables with an integrated bus terminating resistor can be obtained from various cable
manufacturers.

More detailed information about how to work with the Lenze Engineering tools can be
found in the corresponding manuals and online helps.

Note!
Observe the connection between bus cable length and baud rate.
 Bus cable length ( 24)

Note!
If you want to disconnect individual bus stations, ensure that the bus terminators at the
cable ends remain active.
Please observe that the bus termination is not active any longer if ...
• the bus connector has been disconnected;
• the voltage supply of the field device has been disconnected.