Summary Of Functions; Data Acquisition Processing - Veesta World V-RTU2000 Series Technical Information

V-RTU2000 Series
Veesta - Remote Terminal Unit
Technical Specification Manual
2.2

Summary of Functions

2.2.1

Data Acquisition Processing

2.2.1.1 Analog Data Input
2.2.1.2 Accumulated Data Input
2.2.1.3 Digital Data Input
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V-RTU2000 Series is generally installed at on-site power station,
applied to signals monitoring and control performance. It is designed
in multi-processor technique. Each I/O Card has its own processor
which is responsible for the basic data acquisition function. The basic
functions are as follows.
V-RTU2000 Series acquires digital and analog signal from station
and stores it in RTU memory. On the other band, RTU accepts host
command to reflect and transmit back the required data to control
center.
Measured Values, generally to receive signals from power
transducers (Watt / Var / Voltage / Current / Temperature / Position /
Resistance / etc), this is meant; RTU is to gather all physical signals
of main facilities in station.
Energy Counters, accumulation and processing of pulses from
external energy measurement devices are supported.
value is set aside in the local memory for each Pulse Accumulator
point. The Pulse Accumulator will be incremented one count for each
cycle of the input.
Indications, Status of facilities and the status of Momentary Change
Detection (MCD) are acquired. Four
supported: Single indication Double indication, Sequence Capturing,
and Multiple Change detection. The de-bounce time for DC Digital
Input Points can be 1 ms to 250 ms adjustable. The de-bounce time
for AC Digital Input Points can be 48 ms to 250 ms adjustable.
 Single indication (1-Bit Status): involve only a single monitored
external point and hence, have only two states: 0 or 1.
 Double Indication (2-Bit Status): involve the monitoring of two
physical external points and hence, can provide four states: 0/0,
0/1, 1/0, 1/1.
Chapter 2 - System Overview
basic indication
Page 15 of 90
A 16-Bit
types are