Communication Performance

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Communication Performance

Measurement conditions

The communication performance listed on this page was measured under the following conditions.

 

The measurement is performed using the "update cycle measurement function" of our application.

Log 100 communications with the word register on PLC and calculate the average communication time per communication.

Prepare one test PC and connect it to only one PLC. Do not communicate with multiple PLCs at the same time.

Tests are performed without performing control processing such as ladder logic on the PLC side.

The unit of measurement time is milliseconds (ms).

 

The PC environment for the test is as follows:

 

■ Test PC environment

CPU

:Intel(R) Core(TM) i7 CPU K875 @2.93GHz(4Core)

Memory

:4GB

HDD

: 7200rpm

OS

:Widows10 Pro (64bit)

Product Revision

:Rev 1

 

 

 

Download the sample

The communication performance shown on this page was measured using the following sample application.

 

The sample can be downloaded from below.

 

 

hint

You can download a detailed report from "Communication Performance" on our website.

 

 

 

Communication Performance

The communication performance measurement results are as follows:

 

■Mitsubishi Electric Q Series Ethernet

Model used: Q13UDVCPU

Communication area: D0000 - D9999

 

・In the case of one connection

Tag score (words)

ms

10

2

100

3

1000

5

5000

14

10000

28

c_plc_0025

・In the case of parallel connections

Tag score (words)

ms

conditions

10000

15

6 ports used

c_plc_0026

 

 

hint

The maximum communication size of one packet for the Mitsubishi Q Series is approximately 900 words.

Best performance is achieved by defining multiples of 900 tags per PLC.

Please refer to the sample file for details.

 

 

 

■Yokogawa Electric

Model used: FA-M3V

Communication area: D00001 - D10000

 

1. FA-M3 Ethernet General-purpose protocol (binary mode)

・In the case of one connection

Tag score (words)

ms

10

2

100

3

1000

13

5000

49

10000

115

c_plc_0027

2. FA-M3R Ethernet high-speed protocol (binary mode)

・In the case of one connection

Tag score (words)

ms

10

2

100

2

1000

5

5000

21

10000

45

c_plc_0028

 

 

hint

The maximum communication size of one packet of the FA-M3 Ethernet general-purpose protocol is 64 words.

The maximum communication size of one packet of the FA-M3R Ethernet high-speed protocol is four times that of general-purpose protocol, at 256 words.

 

 

 

■Omron Ethernet

Model used: CJ2M CPU31

Communication area: DM00001 - DM10000

 

・In the case of one connection

Tag score (words)

ms

10

6

100

6

1000

13

5000

44

10000

84

c_plc_0029