Status Difference Between A Master Station And A Slave Station At An Error - Mitsubishi Electric MELSEC-Q Series User Manual

7.5
Status Difference Between a Master Station and a Slave
Station at an Error
The station status at an error varies depending on the combination of "PLC Down Select" of Network Parameter, "Data
Link Faulty Station Setting" and "Case of CPU STOP Setting" in the "Operation Setting" window. When configuring the
settings, consider the station status at errors listed below.
(1) Status of a master station, standby master station (when operating as a master
station), and remote I/O station
Data link status
When the CPU module of the master station is set
to STOP at an error (data link continued)
When the CPU module of the local station is set to
STOP at an error (data link continued)
"Data Link Faulty
When data link
Station Setting" of
for the entire
a programming
system is
tool (for master
stopped
station setting)
When a
"Data Link Faulty
communication
Station Setting" of
failure (such as
a programming
power off) occurs
tool (for master
in a remote I/O
station setting)
station
When a
"Data Link Faulty
communication
Station Setting" of
failure (such as
a programming
power off) occurs
tool (for master
in a remote
station setting)
device station
Master station, standby master station (operating as a
Remote
Remote input
output
(RX)
Continue
*2 Continue
Clear Clear
Indefinite
Hold Hold
Clears the receive
area from the
remote I/O station
Clear
having a
communication
failure.
Continue
Holds the receive
area from the
remote I/O station
Hold
having a
communication
failure.
Clears the receive
area from the
remote device
Clear
station having a
communication
failure.
Continue
Holds the receive
area from the
remote device
Hold
station having a
communication
failure.
master station)
Remote Remote
register register
(RY) (RWw) (RWr)
*1 Continue Hold
Continue Continue
Indefinite Hold
Continues
Continues
operation of
operation of
areas other
areas other
than the
than the remote
remote I/O
I/O station.
station.
Holds the
receive area
from the
Continue remote device
station having a
communication
failure.
CHAPTER 7 PARAMETER SETTINGS
Remote I/O station
Input Output
Continue *1
Continue Continue
By external
All points off
signals
By external
All points off
signals
Continue Continue
(Not affected (Not affected
by the by the
communication communication
status of the status of the
remote device remote device
station.) station.)
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