Response Electronics CL6011B Dokumentacja Strona 143

  • Pobierz
  • Dodaj do moich podręczników
  • Drukuj
  • Strona
    / 170
  • Spis treści
  • BOOKMARKI
  • Oceniono. / 5. Na podstawie oceny klientów
Przeglądanie stron 142
Original — December 1991
UM4.6:CS6003
Glossary-21
MVP Acronym: Multivariable Point
N
NAK Acronym: Negative Acknowledgement
NC Acronym: Normally Closed
ND Acronym: Network Device
Negative Acknowledgement (NAK)
A control signal that reports the reception of a data block with errors.
This usually triggers automatic retransmittal of the data block.
Network Device (ND)
A PROVOX device that communicates directly with a network traffic
director. An network device can be any device, but usually is one that
collects information from several local highways. Local traffic directors,
consoles, and trend units are common network devices.
Network Interface Unit (NIU)
A device that lets a computer communicate with other devices of a
PROVOX instrumentation system, via the system’s data highway.
Network Traffic Director (NTD)
A PROVOX device that controls the data flow for the network data
highway. The NTD links network devices and local data highways via the
local traffic directors.
NIU Acronym: Network Interface Unit
NO Acronym: Normally Open
Non-Volatile Memory (NVM)
A type of semiconductor memory that retains its contents even though
power is disconnected.
Normally Closed (NC)
Said of a contact pair closed (conducting) when its device or relay coil is
not energized. Such a contact pair also is called a break contact.
Normally Open (NO)
Said of a contact pair open (not conducting) when its device or relay coil
is not energized.
NTD Acronym: Network Traffic Director
NVM Acronym: Non-Volatile Memory
MVP - NVM
Glossary
Przeglądanie stron 142
1 2 ... 138 139 140 141 142 143 144 145 146 147 148 ... 169 170

Komentarze do niniejszej Instrukcji

Brak uwag