Continuing The Data Link Even When The Master Station Is Faulty (Standby Master Function) - Mitsubishi MELSEC-Q Series User Manual
Cc-link system master/local module, mitsubishi programmable logic controller
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Also See for MELSEC-Q Series:
- Programming manual (1296 pages) ,
- User manual (814 pages) ,
- Reference manual (532 pages)
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4 FUNCTIONS
MELSEC-Q
4.3.5 Continuing the data link even when the master station is faulty
(Standby master function)
This function enables the data link to continue working by switching to a standby
master station (meaning a backup station for the master station) if a system down
occurs in the master station due to a malfunction in the PLC CPU or power supply.
The master station can return to normal mode and to system operation as the standby
master station, even during data-link control by the standby master station, thus
preparing itself for a standby master station system down (master station duplex
function).
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