Mitsubishi Electric MELSEC Q Series Reference Manual page 621

(2) Function added in CC-Link IE Controller Network
(a) Cyclic transmission function
Function
Cyclic transmission punctuality assurance
Group cyclic transmission
(b) Transient transmission function
Function
CC-Link
Read/write of another station's
dedicated
data
instruction
(c) RAS function
Function
Cable fault detection
Cable insertion error detection
(d) Diagnostic function
Function
Circuit test
IP communication test
Description
Keeps the link scan time constant by making each station to send the
specified number of transient transmissions within one link scan.
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.
Description
Reads or writes the specified number of data from or to the target station
device. (RIRD/RIWT instruction)
Description
Communication error due to cable fault can be detected.
Loopback or disconnection from the network due to incorrect cable
connection between OUT and IN can be detected.
Description
Checks the network cable connection status, line status, and each station's
parameter setting status from the control station.
Checks whether no error occurs in the communication route when the IP
packet transfer function is used.
APPENDICES
Reference
section
A
Page 80,
Section 4.1.6
Page 83,
Section 4.1.8
Reference
section
Page 97,
Section 4.2.1
Page 324,
CHAPTER 9
Reference
section
Page 127,
Section 4.4.4
Page 128,
Section 4.4.5
Reference
section
Page 165,
Section 5.6.1
Page 113,
Section 4.3.3
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