Products

Performance

MELSEC-Q seiries 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 8.1 64bit OS
CPU	Intel Core i7-4700MQ CPU @2.40GHz
Memory	16GB
OPC Server	DeviceXPlorer OPC Server Ver5.2.0.1
OPC Client	C# OPC Client
Cable	direct 100BASE-TX cross cable

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	Q06UDVCPU
Ethernet unit	QJ71E71-100
Register	D0-D16383
Max scan time	0.04msec

Communication Performance

[ CPU Built-in Ethernet ]

(sec)

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	1024	2048	4096	8192	16K	32K/2D	64K/4D	128K/8D
Average	0.005	0.008	0.015	0.028	0.056	0.112	0.221	0.461
Max	0.008	0.009	0.018	0.032	0.071	0.128	0.228	0.501
Min	0.004	0.008	0.013	0.027	0.053	0.107	0.216	0.437

[ Ethernet Unit ]

(sec)

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	1024	2048	4096	8192	16K	32K/2D	64K/4D	128K/8D
Average	0.015	0.026	0.048	0.098	0.200	0.388	0.788	1.567
Max	0.015	0.025	0.045	0.088	0.186	0.354	0.740	1.507
Min	0.005	0.013	0.015	0.036	0.061	0.130	0.228	0.459

Results

In case of CPU Built-in CPU port, DxpSERVER can get max 256K word points per sec.
In case of Ethernet Unit port, DxpSERVER can get max 90K word 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).
*In case of 64K points access , Read 64K points by using 4 devices.( 16K point per 1 device).
*In case of 128K points access , Read 128K points by using 8 devices.( 16K point per 1 device).
*The result only means our examination, it doesn't guarantee performance.
[Sep 2014]

MELSEC-Q CC-Link IE Control

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++)

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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Board	Q81BD-J71GP21-SX
CPU	Q04UDEHCPU
Register	W0-W1FFF(Host)
Register	D0-D8191(Another)
Max scan time	0.06msec

Communication Performance

[ Host Station ]

(sec)

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	1024	2048	4096	8192	16K	32K	64K	128K
Average	0.013	0.013	0.014	0.028	0.049	0.126	0.262	0.531
Max	0.018	0.018	0.018	0.035	0.057	0.143	0.281	0.538
Min	0.007	0.007	0.008	0.026	0.036	0.104	0.234	0.527

[ Another Station ]

(sec)

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	1024	2048	4096	8192	16K	32K	64K	128K
Average	0.031	0.060	0.124	0.245	0.499	0.993	1.998	4.093
Max	0.038	0.065	0.140	0.255	0.555	1.083	2.293	4.447
Min	0.027	0.046	0.111	0.226	0.457	0.883	1.816	3.628

Results

In case of continuous data memory(W), it is possible to get max 128K points per sec.
In case of another station access, it is possible to get max 32K 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]

MELSEC-FX seiries Ethernet communication

PC specification

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OS	Windows 7 Professional 32bit OS
CPU	Intel(R) Core(TM) i5 CPU @3.20GHz
Memory	4.00GB
OPC Server	DxpSERVER OPC Server Ver5.1.0.1
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	FX3U-16M
Communication unit	FX3U-ENET-ADP
Register	D0-D8191
Max scan time	1msec

Communication Performance

(sec)

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	1024	2048	4096	8192	16K	32K	64K	128K
Average	0.351	0.752	1.415	2.819	5.626	11.965	22.302	44.679
Max	0.790	1.525	2.865	5.745	11.437	22.946	43.995	84.825
Min	0.346	0.663	1.268	2.738	5.389	11.020	22.022	43.961

Results

In case of continuous data memory(D), it is possible to get max 3,000 points per sec.

Comment

Interface performance

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