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OPC Clients
Parameter
Parity
PC
PLC
Power
IT
Power Factor Controller
Receive
RTS
RVT
RTU
Rx
Signed Integer
Time-out
Transmit
Tri-State
Tx
Unsigned Integer
Word
Xon/Xoff
A2 References
-
2GCS213019A0050_RVT communication with Modbus RTU, Modbus TCP and PQ
Link protocols
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 RVT front plate, 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
Microprocessor based controller from the ABB industrial
controller range. The Power
intended to switch capacitor in order to compensate the power
factor of the electrical network.
Incoming communication signal. (Rx)
RequestToSend
hardware
ClearToSend.
see Power
IT
Power Factor Controller RVT
Remote Terminal Unit
See Receive
Whole number value represented by 16 bits (-32768 to 32767)
Parameter specifying the max. wait time in ms. Waiting for a
response in the range 0..10000 ms.
Outgoing communication signal. (Tx)
The ability of a communications transmitter to turn its circuitry
off, reducing the load on the network
see Transmit
Positive whole number value represented by 16 bits (0 to 65535)
A group of 16 bits
Software implementation of data flow control
IT
Power Factor Controller RVT is
handshaking signal.
RS485 ç Appendices - 21
Used
with
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