ABB RS485 Installation And Startup Manual page 21

IT
Industrial Enabled
Loopback
Long Integer
LRC
Measurement
Modbus adapter
OPC
OPC Servers OPC Server applications are used to collect data from the data
sources like hardware devices. At the bottom level, the servers are mainly for reading
inputs and writing outputs of the data sources. At the upper level, the servers make the
data available in a standard way to the OPC client applications.
OPC Clients
Parameter
Parity
PC
PLC
that information and functions are centered on Aspect
Objects.
A product that is Industrial
according to the process of Industrial
the right to use the "Industrial
A test used for checking functionality of a serial port, utilizing
a test plug that connects send, receive and handshaking
signals
Analog value consisting of two consecutive 16-bit registers
Longitudinal Redundancy Check
A measurement is a value computed by the controller
through its analog and digital inputs. Measurements can be
read from the controller front plate, or through the Modbus
protocol.
It is an optional small interface module through which the
controller is connected to an external Modbus serial
communication bus. It performs an optical to RS485
conversion. The communication with the Modbus adapter is
activated with a parameter.
OLE™ for Process Control. OPC is Plug-n-Play in the field
of Automation and HMI. OLE™ for Process Control (OPC™)
is the most standard way for connecting hardware and data
devices with HMI client applications. OPC is a concept
agreed upon by a committee of members from the OPC
foundation. Most automation companies in the market place
including ABB are members of this foundation. OPC uses
state-of-the art technologies like COM, DCOM, ActiveX of
Microsoft and makes development and programming easier.
In the OPC world, there are two major types of applications:
OPC Servers and OPC Clients.
The OPC Client applications can communicate directly with
the OPC servers and get the data. This way OPC enhances
the interface between client and server applications by
providing a standard mechanism to communicate data from
a data source to any client application.
A parameter is an operating data for the controller.
Parameters can be read and programmed with the front
plate of the controller, or through the Modbus protocol.
Simple method of data error checking performed at the byte
level. May be user-specified as Odd, Even or None with
most equipment and software.
Personal Computer
Programmable Logic Controller
IT
enabled has been verified
IT
certification. It has
IT
enabled" symbol.
RS485  Appendix - 21