4 Hardware
20
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Following chart is a timing diagram of flashing -/1/2/3
(3)
Status of field network
LED
Color
Status
Description
NET
Green
OFF
Initialization state
Flashing
State on online but, connection setting incomplete or error
ON
Device operation: state on online, connection complete
Red
OFF
No power supply
State on offline or no network power
MAC address test incomplete
Flashing
Data exchange timeout
Communication connection timeout
(slave is not connected, no network power)
ON
Serious errors in the network such as connection, network,
and duplicate MAC address
