FSM4000
ELECTROMAGNETIC FLOWMETER | OI/FSM4000-EN REV. E
45
PROFIBUS PA® / FOUNDATION Fieldbus®
I
internal
1
PROFIBUS PA
E
external
2
FOUNDATION Fieldbus
Figure 45: Digital communication PROFIBUS PA / FOUNDATION Fieldbus
The resistance R and condenser C form the bus termination.
They must be installed when the device is connected to the end
of the entire bus cable.
R = 100 Ω; C = 1 µF
Bus termination for S4 transmitter
1
Terminal board for field mount
housing
2
Hook switch for closing the bus
termination
Figure 46: Bus termination
To terminate the bus if the instrument is at the end of the bus
cable, the termination components in the S4 transmitter can be
used. To do so, close both hook switches in the connection area
of the transmitter.
Note
If the transmitter module is removed, bus termination is also
canceled.
Connection via M12 plug (for PROFIBUS PA only)
Pin assignment (front view showing pin insert and pins)
1
PA+
2
nc
3
PA−
4
Shielding
Figure 47: M12 plug-in connector PROFIBUS PA
As an option, the bus can also be connected via an M12 plug
instead of the cable gland (see order information for device). The
device can be shipped completely prewired.
For information about suitable connectors (type EPG300) and
other accessories, refer to the data sheet 10/63.6.44 DE.
