TVA Flowmeter for Saturated Steam Service with ... - Spirax Sarco
TVA Flowmeter for Saturated Steam Service with ... - Spirax Sarco
TVA Flowmeter for Saturated Steam Service with ... - Spirax Sarco
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8.3 Appendix<br />
Abbreviations and definitions<br />
Access point<br />
ASME<br />
Cmd<br />
CRC<br />
dBi<br />
dBm<br />
DSSS<br />
Dyn<br />
FSK<br />
WirelessHART<br />
Gateway<br />
HART<br />
Hexadecimal<br />
HMI<br />
Host<br />
IAPWS<br />
MAC address<br />
Master<br />
Modem<br />
The radio which provides the connectivity to the WirelessHART TM<br />
network<br />
American Society of Mechanical Engineers<br />
Command<br />
Cyclic Redundancy Check. Error detecting code used to check<br />
communications and storage devices.<br />
Gain of the antenna in decibels. 'i' means relative to isotropic antenna.<br />
Power in decibels relative to 1 mW.<br />
Example: 0 dBm = 1 mW, 10 dBm = 10 mW, 20 mW = 100 mW<br />
Direct Sequence Spread Spectrum<br />
Dynamic<br />
Frequency Shift Keying. A scheme in which digital in<strong>for</strong>mation is<br />
transmitted through discrete frequency changes.<br />
Manages and connects the WirelessHART TM to the wired world. It<br />
normally comprises of an Access Point, Network Manager, Security<br />
Manager, Virtual Gateway and HOST Interface.<br />
Highway Addressable Remote Transducer<br />
0 1 2 3 4 5 6 7 8 9 A B C D E F<br />
Human Machine Interface. A graphics based interface between the<br />
user and the system.<br />
One of possibly several user applications that can be executed<br />
sequentially or simultaneously on a master.<br />
International Association <strong>for</strong> the Properties of Water and <strong>Steam</strong><br />
Media Access Control address. Unique identifier <strong>for</strong> assigned to a<br />
network interface.<br />
A device(s) that initiates communication on a WirelessHART TM network<br />
by issuing commands to the Field devices. HART TM supports primary<br />
and secondary masters.<br />
A modem (modulator-demodulator) device that enables a computer to<br />
transmit data to and from a digital to an analogue signal.<br />
MODBUS Communications Protocol (master-slave / client-server )<br />
Network<br />
manager<br />
Packed ASCII<br />
Preamble<br />
PRT<br />
PV<br />
QV<br />
SV<br />
TEG<br />
TDMA<br />
TV<br />
Var<br />
Forms, organizes, monitors and extends the network. It takes care <strong>for</strong><br />
distributing Join and Network Keys as well as communication slots and<br />
channels <strong>for</strong> all participants.<br />
Valid characters: @ A B C D E F G H I J K L M N O P Q R S T U V W X<br />
Y Z [ \ ] ^ _ SP ! " # $ % & ' ( ) * + , - . / 0 1 2 3 4 5 6 7 8 9 : ; < = > ?<br />
A synchronising pattern generating at the beginning of the HART<br />
message to allow proper start-up.<br />
Platinum Resistance Thermometer<br />
Primary Variable<br />
Quaternary Variable<br />
Secondary Variable<br />
Thermoelectric Generator<br />
Time Division Multiple Access<br />
Tertiary Variable<br />
Variable<br />
40<br />
IM-P337-62 MI Issue 1
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