HIMA HIMax X-HART 32 01 - Appendix; Glossary

Appendix X-HART 32 01
Page 54 of 58 HI 801 307 E Rev. 5.00
Appendix
Glossary
Term
Description
ARP
Address Resolution Protocol: Network protocol for assigning the network addresses
to hardware addresses
AI
Analog Input
Connector Board
Connector board for the HIMax module
COM
Communication module
CRC
Cyclic Redundancy Check
DI
Digital Input
DO
Digital Output
EMC
Electromagnetic Compatibility
EN
European Norm
ESD
ElectroStatic Discharge
FB
Fieldbus
FBD
Function Block Diagram
FTT
Fault Tolerance Time
ICMP
Internet Control Message Protocol: Network protocol for status or error messages
IEC
International Electrotechnical Commission
MAC address
Hardware address of one network connection (Media Access Control)
PADT Programming And Debugging Tool (in accordance with IEC 61131-3),
PC with SILworX
PE
Protective Earth
PELV
Protective Extra Low Voltage
PES
Programmable Electronic System
PFD
Probability of Failure on Demand, probability of failure on demand of a safety
function
PFH
Probability of Failure per Hour, probability of a dangerous failure per hour
R
Read
Rack ID
Base plate identification (number)
Non-reactive Supposing that two input circuits are connected to the same source (e.g., a
transmitter). An input circuit is termed "non-reactive" if it does not distort the signals
of the other input circuit.
R/W
Read/Write
SB
System Bus (Module)
SELV
Safety Extra Low Voltage
SFF
Safe Failure Fraction, portion of safely manageable faults
SIL
Safety Integrity Level (in accordance with IEC 61508)
SILworX
Programming tool for HIMax
SNTP
Simple Network Time Protocol (RFC 1769)
SRS
System.Rack.Slot addressing of a module
SW
Software
TMO
TiMeOut
TMR
Triple Module Redundancy
W
Write
r
P
Peak value of a total AC component
Watchdog (WD) Time monitoring for modules or programs. If the watchdog time is exceeded, the
module or program enters the ERROR STOP state.
WDT
WatchDog Time