130 Fieldbus Communication
WAGO I/O SYSTEM 750 XTR
750-333/040-000 FC PROFIBUS G2 12MBd XTR
Manual
Version 1.4.0
Figure 48: Bus Connection
Install bus connection
When connecting the nodes, make sure that the data lines are not reversed.
The bus connection at the start and end of the bus line must be installed. The
bus connection needs the supply voltage VP from the device. Therefore, ensure
that the slave device, to which the bus connection is installed, is always supplied
with power.
Due to the integrated length inductances in the connectors, installing connectors
without attached field devices should be avoided because the lacking capacity of
the device can cause transfer errors.
Use shielded PROFIBUS cable!
To achieve high interference immunity of the system against electromagnetic
interference, a shielded PROFIBUS cable must be used. The shield should be on
both ends if possible and the connection low resistance via large-area shield
clamps with protective ground. In addition, it is important for the cable to be
routed separately from all high-voltage cables if possible. For data rates
≥ 1.5 Mbit/s, branch lines must be avoided.
PROFIBUS User Organization PNO
The PNO makes other documents available on the Internet to its employees.
For example, information about cable specifications is available in
“Technical
Guideline 2.111, PROFIBUS DP/FMS Installation Guidelines
”.
