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1 FUNCTIONS
1.3 IP Packet Transfer Function
Communication speed
This section provides the results of communication speed measured using the IP packet transfer function. Use the results as
a reference.
When request source and destination devices are connected to a CPU module
The results are based on measurement when FTP communications are performed with four modules connected in star
topology.
■System configuration
■Measurement result of the communication speed
The following table lists the time that takes until a file is read from a request source device to a request destination device.
Device Description
Ethernet device (request source
device)
<FTP client>
CPU Intel
Core
2 Duo processor 2.00GHz
OS Microsoft
Windows
7 Professional Operating System
Ethernet board 1000BASE-T
FTP client application FFFTP
Ethernet device (request destination
device)
<FTP server>
CPU Intel
Core
i5 Duo processor 2.67GHz
OS Microsoft
Windows
7 Professional Operating System
Ethernet board 1000BASE-T
FTP server application FileZilla Server
Programmable controller CPU module • R04CPU
• Sequence scan time: 1ms
CC-Link IE Field Network • Cyclic transmission: 128 points assigned to each station for the RX and RY,
256 points assigned to each station for the RWw and RWr
• Transient transmission: N/A
Size of a file to be communicated Time
1K bytes 10ms
50K bytes 300ms
100K bytes 600ms
1M bytes 4000ms
EthernetEthernet
Ethernet device (request destination device)
<FTP server>
Ethernet device (request source device)
<FTP client>
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