Emerson Process Management 3400 User Manual

June 2013

3-9000-743 Rev S

The following terms, acronyms, and abbreviations are used in this document:

°

degree (angle)

o

C

degrees celsius (temperature unit)

o

F

degrees fahrenheit (temperature unit)

ADC

analog-to-digital converter

AGA

American Gas Association

AI

analog input

AMS™ Suite

Asset Management Software

AO

analog output

ASCII MODBUS

A Modbus protocol message framing format in which ASCII characters are used to 
delineate the beginning and end of the frame. ASCII stands for American Standard 
Code for Information Interchange.

boolean

a type of data point that can only take on values of TRUE or FALSE (generally TRUE is 
represented by a value of 1, FALSE is represented by a value of 0)

bps

bits per second (baud rate)

Btu

British thermal unit (heat unit)

cfh

cubic feet per hour

cPoise

centipoise (viscosity unit)

CPU

central processing unit

CTS

Clear-to-Send; the RS-232C handshaking signal input to a transmitter indicating that 
it is okay to transmit data – i.e., the corresponding receiver is ready to receive data. 
Generally, the Request-to-Send (RTS) output from a receiver is input to the Clear-to-
Send (CTS) input of a transmitter.

DAC

Digital-to-Analog Converter

Daniel CUI

Daniel Customer Ultrasonic Interface

Daniel MeterLink

Daniel software application for ultrasonic flow meters

DI

digital input

DO

digital output

Daniel MeterLink

Daniel Customer User Interface

DHCP

Dynamic Host Configuration Protocol

dm

decimeter (10

-1

 meters, length unit)

ECC

Error Correction Code

EEPROM

Electrically-Erasable, Programmable Read-Only Memory

Flash

non-volatile, programmable read-only memory