Mitsubishi Electric MELSEC iQ-R Series User Manual page 142

RAS
RAS stands for Reliability, Availability, and Serviceability. This function improves overall usability of automated equipment.
Function
Slave station disconnection
Automatic return
Master station duplication
detection
IP address duplication
detection
Time synchronization
Synchronization function
This function adjusts the timing with the timing of different slave stations connected on the same network.
Function
CC-Link IE TSN Network
synchronous communication
function
Troubleshooting
This function checks the status of modules and networks by executing diagnostics and operation tests using the engineering
tool.
Function
Module communication test
CC-Link IE TSN/CC-Link IE
Field diagnostics
Communication test
9 FUNCTIONS
140
9.1 Function List
Description
Data link of the station where an error occurred is stopped, and the data
link continues only for stations that are operating normally.
The data link is automatically restarted when the slave station that was
disconnected due to an error becomes normal again.
If one network has multiple master stations, an overlap is detected.
If one network has stations with the same IP address, an overlap is
detected.
This function synchronizes the time of slave stations with the time
synchronization source (CPU module of the master station).
Description
Synchronizes the control cycle of a slave station according to the inter-
module synchronization cycle specified in the master station via CC-
Link IE TSN. This adjusts the operation timing with the operation timing
of other slave stations connected to the same network.
Description
Checks the module hardware when the communication using the CC-
Link IE TSN Plus module is unstable.
Monitors the status of CC-Link IE TSN. The network maps, stations
where data link is not operating, selected station communications
status monitor and so on are displayed on the engineering tool.
This test checks if transient transmission data can be properly routed
from the own station to the communication target.
Availability Reference
Master Local
station station
 
Page 197 Slave
station
disconnection
 
Page 197 Automatic
return
  Page 197 Master
station duplication
detection
 
Page 198 IP address
duplication detection
  Page 199 Time
synchronization
Availability Reference
Master Local
station station
 
Page 200 CC-Link
IE TSN Network
Synchronous
Communication
Function
Availability Reference
Master Local
station station
  Page 371 Module
Communication Test
 
Page 372 CC-Link
IE TSN/CC-Link IE
Field Diagnostics
  Page 382
Communication Test