Hitachi ABB RVT Installation Und Betriebsanleitung Seite 609

Byte
Chassis or Chassis Ground
Coil
Common
CRC
CTS
DHCP
DLL
Earth or Earth Ground
Ethernet
Ground Voltage reference point of a circuit.
Handshaking
Hexadecimal or HEX
HMI
Industrial IT
Industrial IT Architecture
STATUS
Approved
A whole number value represented by eight bits (0 to 255)
A connection to an electrically conductive housing or frame of a device. It may or may not be
connected to Earth Ground.
The telegram structure for Modbus transmission is implemented in registers (WORD) or coils
(BOOL). A coil may be either 8 or 16 bits in length.
The voltage reference point of a circuit. It may or may not be connected to earth ground,
though it is generally assumed to be at zero volts, unless otherwise indicated. In floating cir-
cuits, the common is sometimes at a relatively high potential. This term is sometimes used
interchangeably with the term "Ground" or GND
Cyclic Redundancy Check. Complex error checking on a message block.
ClearToSend hardware handshaking signal. Used with RequestToSend.
is an autoconfiguration protocol used on IP networks. Computers that are connected to IP
networks must be configured before they can communicate with other computers on the net-
work. DHCP allows a computer to be configured automatically, eliminating the need for inter-
vention by a network administrator
Dynamic-link library is Microsoft's implementation of the shared library concept in the Mi-
crosoft Windows and OS/2 operating systems. These libraries usually have the file extension
DLL, OCX (for libraries containing ActiveX controls), or DRV (for legacy system drivers). The
file formats for DLLs are the same as for Windows EXE files — that is, Portable Executable
(PE) for 32-bit and 64-bit Windows. As with EXEs, DLLs can contain code, data, and re-
sources, in any combination.
Global zero voltage reference point. Physical connection is made to the earth through a
grounding rod, water pipe or other reliable connection.
is a family of frame-based computer networking technologies for local area networks (LANs).
It defines a number of wiring and signalling standards for the Physical layer of the OSI net-
working model as well as a common addressing format and Media Access Control at Data
Link Layer.
It may or may not be connected to earth ground, though it is generally assumed to be at zero
volts. Sometimes used interchangeably with the term "Common".
method of data flow control for serial communications
A number system using a decimal 16 as its base. A single digit number in HEX ranges from
0 to 15, represented by 0 to 9 and A to F.
Human-Machine Interface (formerly MMI)
Umbrella concept for ABB's vision for enterprise automation.
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