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100 Communications setup
Section 5: Startup and meter configuration Reference, Installation, and Operations Manual
June 2013 3-9000-743 Rev S
5.2 Communications setup
The Daniel 3410 Series Gas Ultrasonic Flow Meter provides three standard RS-232/RS-485 serial
communication ports (referred to respectively as Port A, Port B, and Port C) and an Ethernet
port (Eth1). Port A and Port B are expected to be used for (general) communication with flow
computers and RTUs. Port C (included on the Series 100 Plus Option Board) can be used for
general communication (such as with a flow computer or RTU). The Series 100 Plus Option
Board, if installed is capable of communicating with other devices via a 375 Field Communicator
or AMS™ Suite.
The Ethernet port is expected to be used for diagnostic purposes. See Section 3.5 for hardware
configuration of communications protocols. See Section 5.1 for software configuration of
communications protocols.
Port A is the preferred port for connection to a flow computer or RTU. If two flow computers are
to be connected to the meter, then Port B should be used to connect to the second flow
computer. If a computer running the Daniel MeterLink program is to be connected to a meter
the Ethernet port is the preferred port for the connection.
If the Ethernet connection is not feasible, then Daniel MeterLink should be connected to the
meter using Port B in full duplex configuration.
Both Ports A and B are individually hardware-selectable for RS-232/RS-485 Full Duplex/RS-485
Half Duplex operation. Port A supports RS-232 RTS/CTS handshaking with software-
configurable RTS on and off delay times. When handshaking is enabled, Port A drives the RTS
output low and expects the CTS input to be active low. Both Ports A and B support individually
software-configurable transmit delay times.
Port C (provided by the Series 100 Plus Option Board) is individually hardware-selectable for
RS-232/RS-485 Half Duplex operation. Port C supports a software-configurable transmit delay
time.
Refer to Daniel P/N 3-9000-754 HART® Field Device Specification Guide: Daniel Gas Ultrasonic
Meters manual for Series 100 Plus Option Board details.
Daniel MeterLink will not communicate with a Daniel 3410 Series Gas Ultrasonic Flow Meter
over a half-duplex serial connection.