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50 Wiring and I/O
Section 3: Electrical installation Daniel 3812 Liquid Ultrasonic Flow Meter Installation Manual
March 2013 3-9000-765 Rev D
3.5 Wiring and I/O
Daniel MeterLink uses the TCP/IP protocol to communicate with the 960-24™ MSTS electronics
instead of Modbus ASCII or RTU. The TCP/IP protocol only works across either Ethernet, RS-485
full duplex (i.e., 4-wire), or RS-232. Daniel MeterLink can communicate with multiple meters if
they are multi-dropped using 4-wire full duplex RS-485 mode. The meter electronics are HART
capable and provide communication flexibility with Daniel 3812 Liquid Ultrasonic Flow Meters.
The HART® output provides communication with other field devices (e.g., 475/375 Field
Com
municator and AMS™ Device Manager software) and ultimately, communicates key
diagnostic information through PlantWeb® architecture.
The meter’s electronics auto-detects the protocol
used and automatically switches between
TCP/IP, Modbus ASCII, and Modbus RTU so it is not necessary to make any meter configuration
changes to change the protocol.
If not using Ethernet, a full duplex serial connection is necessary for Daniel MeterLink to
communicate with a Daniel 3812 Liquid Ultrasonic Flow Meter.