Ras; Device Station Disconnection; Automatic Return; Master Station Duplication Detection - Mitsubishi Electric MELSEC iQ-F FX5 Series User Manual

3.6

RAS

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

Device 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 device station that was disconnected due to an error becomes normal again.
Precautions
• When removing a device station while the system is operating, check that the device station is either performing cyclic
transmission or is disconnected.
• When removing the Motion module, check that the D LINK LED is either on or off.

Master station duplication detection

When one network has multiple master stations, duplication is detected.
• When multiple master stations are simultaneously powered on, or when multiple master stations are simultaneously
connected, the error "Master station duplication" (error code: 300FH) is detected in all master stations and cyclic
transmission cannot be performed in any stations.
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• When another master station is added to the network during data link, the error "Master station duplication" (error code:
300FH) is detected in the added master station and cyclic transmission cannot be performed. Other stations continue data
link.
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• When two networks are connected during data link, the error "Master station duplication" (error code: 300FH) is detected in
master stations on both networks and cyclic transmission cannot be performed in any stations.
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3 FUNCTIONS
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3.6 RAS
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