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The Profibus interface is DB9F (DB-9 pin female). It is galvanic isolated from the rest of the controller. The PIN allocation is given in the table.
Table - Connector PIN Allocation
PIN |
Signal |
Description |
1 |
- |
Not Used |
2 |
- |
Not Used |
3 |
B Line |
Positive RxD/TxD, RS485 level |
4 |
RTS |
Request to send |
5 |
GND Bus |
Bus Ground (isolated) |
6 |
+5V Bus Output |
+5V termination power (isolated) |
7 |
- |
Not Used |
8 |
A Line |
Negative RxD/TxD, RS485 level |
9 |
- |
Not Used |
Housing |
Cable Shield |
Internally connected to the protective earth via cable shield filters according to the Profibus standard. |
Caution!
Any current drawn from the pin 6 will affect the total power consumption. The Profibus connector must not be used for other application that may damage the Profibus interface.