40
FEM630 | ELECTROMAGNETIC FLOWMETER | OI/FEM630-EN REV. A
24 V DC loop power supply (plug-in module)
Use of the ‘loop power supply (blue)’ plug-in card allows a
passive output on the transmitter to be used as an active
output. See also Connection examples on page 41.
Modbus / PROFIBUS DP interface V1 / V2 (plug-in card)
A Modbus or PROFIBUS DP interface can be implemented by
using the ‘Modbus RTU, RS485 (white)’ or ‘PROFIBUS DP,
RS485 (white)’ plug-in cards.
The plug-in module can only be used in slot OC1.
The corresponding plug-in card can only be used in slot OC1.
For information on communication through the Modbus or
PROFIBUS DP protocols, refer to chapters Modbus®
communication on page 48 and PROFIBUS DP®
communication on page 49.
Note
If the device is used in potentially explosive atmospheres, the
plug-in card for the loop power supply may only be used to
supply a passive output. It is not allowed, to connect it to
multiple passive outputs!
6 ...Electrical connections
...Pin assignment
Figure 46
Figure 47 Plug-in card as a Modbus / PROFIBUS
Terminals
Function
For active connection of passive outputs
Output Voltage
Load rating I
max
G11739
V1+
IE
+24 VDC
0V
V2-
OC1
G12386
D
R
V2-
IE
V1+
A
B
OC1
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