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Performance

Simulation communication

Add array OPCItems as Advise from a OPC Client.
It is measured reading time from added OPCItems. Communication performance is defined as average time of ten times measurement.
This time means to read the value of a continuous area of the device.

PC specification

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OS Windows 7 Professional 32bit OS
CPU Intel(R) Core(TM) i7 CPU 870 @2.93GHz
Memory 3.00GB
OPC Server DxpSERVER OPC Server Ver5.0.1.1
OPC Client OPCClient sample VcSampleOpc(C++)
Cable 100BASE-TX cross cable connecting directly

OPC Server setting

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Protocol Timer Tick 10msec
Timer Tick for Async Update Mode 10msec
Multi Access Mode Enable
Multi Access for Snyc Asnyc Disabled
Async Update Mode Disabled

PLC setting

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CPU E-CON Standard Simulator
Register a1-a8192
Repeat Vel. 50%

Communication Performance

(sec)

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  64 128 256 512 1024 2048 4096 8192
Average 0.196 0.398 0.845 2.098 3.931 8.164 17.133 36.135
Max 0.209 0.422 0.863 2.723 4.555 8.645 17.606 36.661
Min 0.181 0.381 0.837 1.781 3.665 8.042 16.699 35.493

Results

In case of continuous integer array tag , it is possible to get max 300 points per sec.

Comment

*Graph displays average time of ten times measurement.(1point = 1word)
*The result only means our examination, it doesn't guarantee performance.
[Aug 2012]

Interface performance

Results of measurement of each interface(eg.sync /async /datachange event etc).
(detail)