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F-4600 With LCD Flow Meter Manual 06/18 - 2020-3 / 35874 Page 29
SECTION 7.0: MODBUS
MODBUS
®
serial interface connections are connected at terminal block TB4.
Transceiver: 2-wire, half-duplex (1/4 unit load)
MODBUS
®
Address Range: 1 - 247 (Default: 017)
Data Format: 8 bit
Stop Bits: 1
Parity: None (Default), Odd, or Even
Byte Order: ABCD
Baud Rate: 4800, 9600, 19200, 38400, 57600, 76800 or 115200 (Default: 9600)
Termination: Jumper selectable 120Ω resistor (See page 13)
Biasing: None
Engineering Units Abbreviation Engineering Units Abbreviation
Volume Rate (Flow) Volume Total
Gallons per minute GPM Gallons Gal
Liters per second L/s Liters Liters
Cubic feet per minute fT
3
/min Cubic Feet ft
3
Cubic meters per hour m
3
/hr Cubic Meters m
3
Temperature
Degrees Fahrenheit ºF
Degrees Celsius ºC
Velocity (Flow velocity, Fluid speed of sound)
Feet per second ft/s
Meters per second m/s
Function Codes Supported:
01 - Read Coil(s)
02 - Read Discreet Input(s)
03 - Read Holding Register(s)
04 - Read Input Register(s)
05 - Write Single Coil
06 - Write Single Register
08 - Diagnostic
15 - Write Multiple Coils
16 - Write Multiple Registers
17 - Report Slave ID
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