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Performance

KV-7500 series Ethernet 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 10 Professional 64bit OS
CPU Intel(R) Core(TM) i7-6700CPU @3.40GHz
Memory 8.00GB
OPC Server DxpSERVER OPC Server Ver5.3.2.1
OPC Client OPCClient sample RCWClient(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
Communication per Client Disabled
Multi Access for Snyc Asnyc Disabled

PLC setting

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CPU KV-7500
PORT CPU Built-in Ethernet Port
Register DM0-DM16383
Max scan time 0.031msec

Communication Performance

(sec)

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  1024 2048 4096 8192 16K 32K 64K 128K
Average 0.006 0.012 0.024 0.055 0.111 0.210 0.441 0.873
Max 0.008 0.013 0.032 0.067 0.143 0.228 0.481 0.914
Min 0.006 0.011 0.022 0.045 0.089 0.188 0.415 0.835

Results

In case of continuous data memory(DM), it is possible to get max more than 128,000 points per sec.

Comment

*Graph displays average time of ten times measurement.(1point = 1word)
*In case of 32K points access , Read 32K points by using 2 devices.( 16K point per 1 device).
*The result only means our examination, it doesn't guarantee performance.
[Sep 2017]

KV-5000 series Ethernet 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 860 @2.80GHz
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 KV-5000
Register DM0-DM16383
Max scan time 0.27msec

Communication Performance

(sec)

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  1024 2048 4096 8192 16K 32K 64K 128K
Average 0.048 0.048 0.097 0.180 0.356 0.658 1.319 2.620
Max 0.048 0.051 0.099 0.199 0.404 0.690 1.384 2.643
Min 0.047 0.045 0.092 0.140 0.338 0.628 1.283 2.556

Results

In case of continuous data memory(DM), it is possible to get max 45,000 points per sec.

Comment

*Graph displays average time of ten times measurement.(1point = 1word)
*In case of 32K points access , Read 32K points by using 2 devices.( 16K point per 1 device).
*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)