Fuxx Control - ARS 2320 / ARS 2340 Instruction Manual - Kuhnke

KUHNKE Automation Fuxx Control ARS 2320 / ARS 2340
For highly flexible applications:
� LAPP KABEL UNITRONIC BUS-FD P L2/FIP; 1 x 2 x 0.64; ∅ 8 mm,
with tinned CU shielding
for highly flexible use in drag chains
11.1.4 Termination and bus terminating resistors
Every bus segment of a PROFIBUS network has to be equipped with bus terminating resistors to
minimise line reflections and to adjust a defined rest potential on the line. The bus termination has to
be provided at the beginning and at the end of every bus segment.
Most PROFIBUS connectors come supplied with integrated terminating resistors. For bus connections
with connectors without integrated terminating resistors, the PROFIBUS-DP interface has its own
terminating resistors. They can be activated with the help of the two DIP switches on the module
(switch set to ON).
To ensure safe operation of the network, only one bus termination may be used at a time.
The external connection can also be set up discretely (see Figure 35). The power supply of 5 V
required for the externally connected terminating resistors is supplied at the PROFIBUS connector of
the PROFIBUS-DP interface (see pin assignment in Table 48).
GND 5V
390 Ohm
220 Ohm
390 Ohm
+5V
B-Line
A-Line
Figure 35: PROFIBUS-DP interface: Connection with external terminating resistors
E 732 GB 139
14.12.2006