Mitsubishi Electric MELSEC iQ-R Series User Manual page 37

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 "Input Data from Data Link Faulty Station", "Output
Mode upon CPU STOP", and "Data Link Setting at CPU Failure" under "Supplementary Cyclic Settings" in "Application
Settings". When configuring the settings, consider the station status at errors listed below.
■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 Setting
at CPU Failure" = "Continue the Data Link")
When the CPU module of the local station is
set to STOP at an error ("Data Link Setting at
CPU Failure" = "Continue the Data Link")
When data link "Input Data
for the entire from Data Link
system is Faulty Station"
stopped (setting in the
master station)
When a "Input Data
communication from Data Link
failure (such as Faulty Station"
power off) (setting in the
occurs in a master station)
remote I/O
station
When a "Input Data
communication from Data Link
failure (such as Faulty Station"
power off) (setting in the
occurs in a master station)
remote device
station
When a "Input Data
communication from Data Link
failure (such as Faulty Station"
power off) (setting in the
occurs in a master station)
local station
*1 If parameter settings have been configured using dedicated instructions, the data is held. If parameter settings have been configured
using an engineering tool, the data is cleared when Y is set to the refresh device of the remote output (RY). The data is held or cleared
according to "Output Mode upon CPU STOP" when the device other than Y is set.
*2 When Y is set to the refresh device of the remote output (RY) in the local station that has stopped, only the remote output (RY) in the
stopped local station is cleared. The data is held or cleared according to "Output Mode upon CPU STOP" when the device other than Y
is set. Data link is continued for the other local stations.
Master station, standby master station (operating as a
master station)
Remote input Remote
(RX) output (RY)
*1
Continue
*2
Continue
Clear Clear Continue
Hold Hold
Clear Clears the receive Continue
area from the
remote I/O station
having a
communication
failure.
Hold Holds the receive
area from the
remote I/O station
having a
communication
failure.
Clear Clears the receive Continue
area from the
remote device
station having a
communication
failure.
Hold Holds the receive
area from the
remote device
station having a
communication
failure.
Clear Clears the receive Continue
area from the local
station having a
communication
failure.
Hold Holds the receive
area from the local
station having a
communication
failure.
Remote I/O station
Remote Remote Input
register register
(RWw) (RWr)
Continue Hold Continue
Continue Continue Continue
Continue Hold By external
signals
Continue Continue By external
signals
Continue Holds the Continue (Not
receive area affected by the
from the remote communication
device station status of the
having a remote device
communication station.)
failure.
Continue Holds the Continue (Not
receive area affected by the
from the local communication
station having a status of the
communication local station.)
failure.
1.1 Cyclic Transmission
1
Output
*1
Continue
All points off
All points off
Continue (Not
affected by the
communication
status of the
remote device
station.)
Continue (Not
affected by the
communication
status of the
local station.)
1 FUNCTIONS
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