On Profibus Network it is important to use the right cable and connector as the communication speed goes up to 12 Mbautes!
Those cable and connectors are used in Profibus DP, FMS, Profis S-Bus, Profi S-IO and MPI!
Wiring and Network termination should be as follows:
|
1 |
Shield |
|
3 |
RxD/TxD-P |
|
4 |
CNTR-P |
|
5 |
DP GND |
|
6 |
DP +5V |
|
8 |
RxD/TxD-N |
|
9 |
CNTR-N |
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Supplier for 9-pole Profibus D-Sub connectors to connect PCD controllers to Profibus networks:
ERNI Elektrotechnik AG, Brüttisellen, Switzerland:
● ERbic junction, horizontal grey: Erni Ref. 103648
(junction fitted with series inductance of 110 nH)
● ERbic junction, horizontal grey:
with PG connector: Erni Ref. 103663
(junction fitted with series inductance of 110 nH)
● ERbic termination, horizontal yellow: Erni Ref. 103649
(junction fitted with series inductance of 110 nH
plus termination resistors of 390 Ω and 220 Ω)
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ERNI ERbic connector
The cable should be approved by the Profibus norm DIN 19245:
Attached 2 pdf files (both in french and german) of a swiss cable supplier Volland AG 8153 Rümland / Switzerland;
Ref.: 01 0217 0220 cable for fixed installation
01 0271 0022 fexible cable
Note:
If the bautrates isn't greater than 187,5 bautes (for ex. Profi S-Bus with PCD3.M3xx / PCD7.D7xx) you can use other more advantegeous cable, especially if the network segment is shorter than 600 meters!
See attached document "Annexe1 CI 2005_11"
