Mitsubishi Electric MELSEC Q Series Reference Manual page 619

(c) Comparison of RAS functions
Function
Detection of duplicated control station or station No.
Control station switching
Sub-control station performs data link when
control station went down.
Control station return control
Automatic return
Max. number of returned stations at one scan
Loopback
Detection of time of transient transmission error completion
Transient transmission in the case of a CPU module error
Prevention of station failure by external power supply
(d) Comparison of diagnostic function
Function
Module
At system startup
Before system operation
Hardware test
Self-loopback test
Internal self-loopback test
Station-to-station test
Forward loop test, reverse loop
test
Communication test
Loop test
Setup confirmation test
Station order check test
: compatible, : partially changed, —: incompatible
Compatibility Precautions for replacement
No setting item is provided for the CC-Link IE
Controller Network module.
The sub-control station always continues data
link when the control station goes down in the
CC-Link IE Controller Network.
The CC-Link IE Controller Network module
does not have setting items.
The data link will be continued even when a
station returns as a control station in the CC-
Link IE Controller Network.
The CC-Link IE Controller Network module
does not have setting items.
The CC-Link IE Controller Network does not
have restriction on the maximum number of
returned stations.
Operation is different when power is applied
during reset of CPU module. (
614, Appendix 4.1 (3))
: compatible, : partially changed, —: incompatible
Compatibility Precautions for replacement
Set to the test mode at network parameters in
the CC-Link IE Controller Network module.
The hardware test includes the internal self-
loopback test in the CC-Link IE Controller
Network module.
The station-to-station test is set to executing
stations only in the CC-Link IE Controller
Network module.
Set online mode to the target station.
The circuit test includes the forward and
reverse loop tests in the CC-Link IE Controller
Network module.
The circuit test includes the loop test, setup
confirmation test, and station order check test
in the CC-Link IE Controller Network module.
APPENDICES
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