Ras; Slave Station Disconnection; Master Station Duplication Detection - Mitsubishi Electric RD78G4 User Manual

1.5

RAS

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

Slave station disconnection

In star topology, the data link of the slave station where the error occurred is stopped, so the data link is connected only with
the normal slave stations. In line topology, the slave station where the error occurred and the stations beyond are
disconnected.

Master station duplication detection

If there are multiple master stations on one network, duplication is detected.
• When multiple master stations are simultaneously powered on, or when multiple master stations are simultaneously
connected, Master station duplication (error code 300FH) is detected in all master stations and cyclic transmission cannot
be performed in all stations. (Transient transmission available)
No.0
• If another master station is added to the network during data link, Master station duplication (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
• If two networks are connected during data link, Master station duplication (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.1 No.2
No.1 No.2
No.0
No.0
No.0
No.2
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1.5 RAS