Emerson Daniel 3814, Installation Manual

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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 is HART capable and provides communication flexibility with Daniel
3814 Liquid Ultrasonic Flow Meters.
The HART ® output provides communication with other field devices (e.g., 475/375 Field
Communicator and AMS ™ Device Manager software) and ultimately, communicates key
diagnostic information through PlantWeb ® architecture.
NOTICE
If not using Ethernet, a full duplex serial connection is necessary for Daniel MeterLink to
communicate with a Daniel 3814 Liquid Ultrasonic Meter.
The Daniel 3810 Series Ultrasonic Flow Meter 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.
3.5.1 CPU Module labeling and LED indicators
The meter’s metrology mode and the status of the data transfer from the Acquisition
Module to the CPU Module is indicated via light-emitting diode (LED) status indicators.
The Write PROT. switch prevents overwriting the meter’s configuration.
Figure 3-3: CPU Module labeling and LED indicators
A. Acquisition/Measurement mode
B. Power
C. RX (RS-485/RS-232) - receiving data
D. LED 4 - not used
E. LED 5 - not used
F. TX (RS-485/RS-232) - transmitting data
G. Link (Eth1 Link) - user Ethernet connection
Installation manual Electrical Installation
3-9000-760 May 2019
Installation manual 53