Ras; Slave Station Disconnection; Automatic Return; Master Station Duplication Detection - Mitsubishi Electric MELSEC iQ-R Series User Manual

9.6

RAS

RAS stands for Reliability, Availability, and Serviceability. This function improves overall usability of automated equipment.

Slave station disconnection

Data link of the station where an error occurred is stopped, and the data link continues only for stations that are operating
normally.

Automatic return

The data link is automatically restarted when the slave station that was disconnected due to an error becomes normal again.
Precautions
• When removing a slave station while the system is operating, check that the slave station is either performing cyclic
transmission or is disconnected.
• When removing the CC-Link IE TSN Plus module, check that the D LINK LED is either on or off.

Master station duplication detection

If one network has multiple master stations, an overlap is detected.
• When multiple master stations are simultaneously powered on, or when multiple master stations are simultaneously
connected, Master station duplication detection (error code: 300FH) is detected in all master stations and cyclic
transmission cannot be performed in all stations. (Transient transmission available)
No.0 No.1
• If another master station is added to the network during data link, Master station duplication detection (error code: 300FH)
is detected in the added master station and cyclic transmission cannot be performed. (Transient transmission available)
Other stations continue data link.
No.0 No.1
• If two networks are connected during data link, Master station duplication detection (error code: 300FH) is detected in
master stations on both networks and cyclic transmission cannot be performed in all stations. (Transient transmission with
IP address specification is available)
No.0 No.1
No.2 No.0
No.2
No.0
No.0
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9.6 RAS