VEGA TH LINK Version 1.1 Installation Guide - Manual (Page 30)

Connecting the PROFIBUS
Trebing & Himstedt Prozeßautomation GmbH & Co. KG | TH LINK
30
Bus terminating resistors
Terminations of a PROFIBUS segment must each be terminated
with a bus terminating resistor. Use standardised plugs
containing terminating resistors.
Fig. 8: Bus termination configuration (see standard IEC 61158)
Setting PROFIBUS parameters
Depending on the used application software (not included in the
scope of delivery), the TH LINK can be a passive station (without
an own station address) or an active station (class 2 PROFIBUS
master).
The setting of the PROFIBUS parameters is only required, if you
use the TH LINK as a class 2 master in the operation mode
active/passive PROFIBUS station. The PROFIBUS parameters
are given by the class 1 master.
[1] 390
Ω
Pull-up resistance from pin 3 to positive supply voltage at pin 6
[2] 220
Ω
Cable terminating resistor between pin 3 and pin 8
[3] 390
Ω
Pull-down resistance from pin 8 to data reference potential at
pin 5
Data+
(Pin 3)
Data–
(Pin 8)
GND
DC/DC
(Pin 5)
[2] [3] [1]
+5 V
DC/DC
(Pin 6)