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".