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17
8.
LED (status, error display)
■
RUN Flashes status (Error display)
RUN illumination status
Status
Always illuminated
No communication error
Fast flashing
(
0.1 second period
)
RS-485 communication error
Slow flashing
(
2 second period
)
RS-232C communication error
Caution
・
Communication errors can be detected as framing errors, parity errors, and overrun errors.
・
If an error is detected in both RS-485 and RS-232C, RUN illumination status is fast flashing.
(Prioritize RS-485 communication errors)
Place Display Color
Status
1
RUN
Blue
Illuminates when the AD-8551R is powered on.
Flashes when the RS-485 or RS-232C communication settings are
incorrect.
(Refer to the following “RUN illumination status (Error display”)
2
RXD
Yellow Flashes when the AD-8551R receives data from the weighing device.
3
SD
Green Flashes when the AD-8551R is transmitting data to the host.
4
RD
Orange Flashes when the AD-8551R is receiving data from the host (PLC, PC,
etc.)
1
2
3
4
Illumination timing at time of error
Illuminated
Off
Period
At the time of RS-485 communication error: 0.1 seconds
At the time of RS-232C communication error: 2 seconds