108 AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B
Profibus module: Electrical connections
RS485 interface
Pin Signal Explanation
1 – not assigned
2 M24 24 V output voltage, ground
3 RxD/TxD-P Receive/send data plus, B line
4 – not assigned
5 DGND Data transmission potential (reference potential for VP)
6 VP Supply voltage plus (5 V)
7 P24 24 V output voltage plus, max. 0.2 A
8 RxD/TxD-N Receive/send data N, A line
9 – not assigned
Design: 9-pole female Sub-D plug
MBP interface (not intrinsically safe)
Pin Signal
1 +
2 Shield
3 –
4 not assigned
Design: 4-pole plug-in terminal strip. Please refer to the information about
the requisite material (see page 116)!
NOTE
For additional information on "Profibus", refer to the Technical Information
"AO2000 Profibus DP/PA Interface".
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