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APPENDICES
A
Appendix 4 Comparison Between CC-Link IE Controller Network and MELSECNET/H
Appendix 4.2 Comparison of function
(2) Function added in CC-Link IE Controller Network
(a) Cyclic transmission function
(b) Transient transmission function
(c) RAS function
(d) Diagnostic function
Function Description
Reference
section
Cyclic transmission punctuality assurance
Keeps the link scan time constant by making each station to send the
specified number of transient transmissions within one link scan.
Page 80,
Section 4.1.6
Group cyclic transmission
A Universal model QCPU can share cyclic data only with stations in the
same shared group.
It does not receive cyclic data from stations in different shared groups.
Stations with no shared group setting will share cyclic data with all of the
stations.
Page 83,
Section 4.1.8
Function Description
Reference
section
CC-Link
dedicated
instruction
Read/write of another station's
data
Reads or writes the specified number of data from or to the target station
device. (RIRD/RIWT instruction)
Page 97,
Section 4.2.1
Page 324,
CHAPTER 9
Function Description
Reference
section
Cable fault detection Communication error due to cable fault can be detected.
Page 127,
Section 4.4.4
Cable insertion error detection
Loopback or disconnection from the network due to incorrect cable
connection between OUT and IN can be detected.
Page 128,
Section 4.4.5
Function Description
Reference
section
Circuit test
Checks the network cable connection status, line status, and each station's
parameter setting status from the control station.
Page 165,
Section 5.6.1
IP communication test
Checks whether no error occurs in the communication route when the IP
packet transfer function is used.
Page 113,
Section 4.3.3
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