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F-5500 Thermal Mass Flow Meter Manual 06/17 - 2030 / 107023 Page 69
Model F-5500
COMMUNICATIONS
Model F-5500
COMMUNICATIONS
Scope
This portion of the manual describes the BACnet MS/TP implementation using RS485
serial communication physical layer for the ONICON F-5500 Mass flow meter.
BACnet Protocol
BACnet MS/TP (Building Automation and Control Network /Master Slave Token
Passing) is a data link layer protocol designed for communication between devices
in building automation control systems. The protocol is based on devices, objects,
properties, and services. Information inside a BACnet device is organized into a series
of objects. Properties allow the data from the object to be written or read. The actions
that a BACnet device uses to interact with another device are the services.
The F-5500 Device profile: BACnet Smart Sensor (B-SS)
F-5500 supports the following device binding methods:
Receive Who-Is, send I-Am (BIBB DM-DDB-B)
Receive Who-Has, send I-Have (BIBB DM-DOB-B)
Objects for F-5500:
Analog Input 1 = Flow
Analog Input 2 = Gas Temperature
Analog Input 3 = Total Flow / Reset Total
Analog Input 4 = Elapsed Time since reset
BACnet Indicators
LED indicator LP3 cycles on and off to indicate that the F-5500 is operating.
LED indicator LP2 blinks when BACnet signals are received and LP1 blinks when
BACnet signals are transmitted.
BACnet Introduction
BACnet
Introduction
BACnet Protocol
BACnet
Indicators
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