Interfaces
Operating Manual PSSu H m F DPsafe SN SD
1002933-EN-04
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INFORMATION
The two data lines are also called A and B on PROFIBUS.
Always connect the A-line ("RxD/TxD-N") to the A-lines of all the other
PROFIBUS subscribers.
The B-line ("RxD/TxD-P") should only be connected to the B-lines of the
other PROFIBUS subscribers.
If communication is not established, check the connections using a continu-
ity tester.
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Connect the connector housing to the shielding on the PROFIBUS cable. The con-
nector housing should be connected with low impedance to the mounting rail.
CAUTION!
Do not use the signals VP (+5 V ext.) and DGND (GND ext.) to supply
voltage to external devices! They are exclusively used to supply the
PROFIBUS DP bus terminating resistors.
