Endress+Hauser HART Levelflex FMP53 Operating Instructions Manual page 16

Electrical connection
Block diagram, 4-wire: 4 to 20 mA HART (90 to 253 V
 11 Block diagram, 4-wire: 4 to 20 mA HART (90 to 253 V
1 Evaluation unit, e.g. PLC
2 Resistor for HART communication (≥ 250 Ω); observe maximum load
3 Connection for Commubox FXA195 or FieldXpert SFX350/SFX370 (via VIATOR Bluetooth modem)
4 Analog display unit; observe maximum load
5 Cable screen; observe cable specification
6 Measuring device
7 Supply voltage; observe terminal voltage, observe cable specification
6.1.2 Device plug
In the case of the device versions with a plug, the housing does not need to be opened to
connect the signal cable.
 12 Pin assignment of M12 plug
1 Signal +
2 Not assigned
3 Signal -
4 Ground
16
3
2
1
4
1
)
AC
+
3
I
-
4
L
Y
1
N
2
)
AC
3
2
Levelflex FMP53 HART
4
5
6
7
Endress+Hauser
A0036527
A0011175