SBC PCD3 Series - Profibus-DP Terminating Resistors

Saia-Burgess Controls AG
Hardware manual for PCD3 series │ Document 26-789 ENG19│ 2018-06-29
TerminatingresistorsoftheProbus-DP
RIO (Remote Input Output) head stations
4-12
4
 

Toavoidreectionsatthelineends,eachsegmentmustbeterminatedwhereits
physical line ends.
As a result, the lines are also biased to a rest potential.
AccordingtotheProbusstandard,thismustnotbedonedirectlyontheProbus
devices, but must be achieved by means of external components.
BoththeterminationboxPCD7.T160orstandard9-pinProbusD-subconnectors
are suitable here. For further information, see manual 26-740, installation
componentsforRS-485networksandmanual26-765,Probus-DP.
The network termination must look like this:
12345
678
9
Frontview
R220
R390
R390
1 Shield
3 RxD/TxD-P
4 CNTR-P
5 DP GND
6 DP +5V
8 RxD/TxD-N
9 CNTR-N
Supplierof9-pinProbusD-SubconnectorsforconnectionofSaiaPCD
®
ControllerswithProbusnetworks:
ERNI Elektroincs AG, Brüttisellen Zurich, Switzerland
http://www.erni.com→searchforErnireferencenumber:
ERbic connection, horizontal grey:
(Connection equipped with series inductions of 110 nH)
Erni Ref. 103648
ERbic connection, horizontal, gray with PG connector:
(Connection equipped with series inductions of 110 nH)
Erni Ref. 103663
ERbic termination, horizontal yellow:
(Connection equipped with series inductances of 110 nH
plusterminationresistorsof390Ωand220Ω)
Erni Ref. 103649
ERNI ERbic connector