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■ STATUS INDICATOR LED
Power
Run
Error
SD
ON
ON
BL
BL
ON
ON
BL
BL
ON
ON
BL
BL
ON
ON
BL
OFF
ON
ON
BL
OFF
ON
ON
OFF
BL
ON
ON
OFF
BL
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
OFF
BL
BL
ON
OFF
BL
BL
ON
OFF
BL
OFF
ON
OFF
BL
OFF
ON
OFF
OFF
BL
ON
OFF
OFF
BL
ON
OFF
OFF
OFF
ON
OFF
OFF
OFF
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF = OFF, ON = ON, BL = Blinking
---- = Inconceivable in normal operations (e.g. LED failure)
RD
STATUS
ON
Communicates normally with occasional CRC errors due to noise interference.
ON
Communicates normally but the Baud Rate and/or Station Address switches failed.
Error LED flashes approximately in 0.5 second intervals.
OFF
----
ON
CRC error found in the received data. Unable to respond.
OFF
----
ON
Normal communication
OFF
----
ON
Unable to receive data addressed to the station.
OFF
----
ON
Performs the interval-timed responses but CRC error found in receiving the refresh data.
OFF
----
ON
CRC error found in the data addressed to the station.
OFF
----
ON
Link is not started.
OFF
----
ON
No data addressed to the station. Or unable to receive data addressed to the station due to
noise interference. (Missing parts of the data sent from the master)
OFF
Unable to receive data due to wire breakdown
ON/
Faulty Baud Rate and/or Station Address setting
OFF
OFF
Power input removed. Or power supply failure.
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: + 81 ( 6 ) 6659-8201 Fax: + 81 ( 6 ) 6659-8510 E-mail: info@m-system.co.jp
R8-NC3
EM-9726 P. 3 / 7
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