Fluke 19xC-2x5C
Users Manual
A-8
Profibus PA/31.25 kBits/s.
Profibus PA (Process Automation) is optimized for
process control with focus on explosion safety. The wires
are marked Data + and Data – and carry a DC supply
with superimposed data. Additionally there are wires with
DC power only. Data traffic is continuous.
To check this bustype, ScopeMeter Channel A is on and
alternately AC coupled for data or DC coupled to test the
DC supply. The recommended probe is the Fluke 10:1
probe. Connect the probe as shown below.
DATA +
DATA -
Warning
When planning tests on this bustype, make
sure the proper safety rules are adhered to!
The figures below show some connector types.
A: Data + and Power
B: Data - and Power
C: Optional Power +
D: Optional Power -
A
B
D
C
Connector acc. IEC61158-2
for harsh environment
(fixed device side, male contacts
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