APG MPX Slave Sensor user manual - Manual (Page 6)

MPX Series Magnetostrictive Level Sensors
Rev. B, 4/13
6
Automation Products Group, Inc.
APG...Providing tailored solutions for measurement applications
Tel: 1/888/525-7300 • Fax: 1/435/753-7490 • www.apgsensors.com • [email protected]
• Sensor Wiring
All MPX models will operate on 10-24 Vdc. Always use a high quality power
source that will deliver clean, stable voltage.
Modbus RS-485 Wiring
(MPX-E1 and MPX-R1 models)
Always use shielded cable. APG recommends using twisted-pair cable for all
Modbus network wiring.
Power
Supply
Master
Device
RS-485 A
RS-485 B
+12-24 Vdc
GND
Sensor 1
V+
A B
Use Shielded Cable
120 Ω
terminating
resistor
120 Ω
terminating
resistor at last
sensor
Modbus Daisy-Chain Wiring
GND
Sensor 2
V+
A B
GND
Sensor 3
V+
A B
GND
MPX-E1 and MPX-R1 wiring terminal