Allen-Bradley PV300 Micro

Publication 2711-UM014B-EN-P
Glossary 2
DF1
Allen-Bradley communication protocol based on an ANSI X3.28-1976
specification.
download
See upload/download.
DH-485 link
Data Highway 485 link. An Allen-Bradley token-passing carrier-band
link for a local area network.
DH+
 link
Data Highway Plus link. An Allen-Bradley token-passing baseband
link for a local area network.
DHCP
Dynamic Host Configuration Protocol (DHCP) software allows for
dynamic allocation of addressing information for new attached
devices on a TCP/IP network.
Domain Name
Character string mapping the local domain to the IP address of the
DNS server. See DNS Server.
DNS Server
The Domain Name Server (DNS) converts more convenient host
names into IP addresses. The DNS server is identified by a 32-bit IP
address.
EMI
Electromagnetic Interference. Any electromagnetic disturbance that
interrupts, obstructs, or otherwise impairs the performance of
electronic equipment.
EPROM
Erasable Programmable Read-only Memory. A PROM that can be
erased, usually with ultraviolet light, then re-programmed with
electrical signals. As with all PROMs, it is nonvolatile random-access
memory.
EEPROM (flash)
Electrically-Erasable PROM. A type of PROM that can be erased and
re-programmed by electrical signals. As with all PROMs, it is
nonvolatile random-access memory. Used by the PanelView terminals
to stored applications.
firmware
Logic stored in read-only memory.