
User Manual Version 1.0
MB5001C series 1-port Modbus Gateway
Copyright © 2010 Atop Technologies, Inc.
All rights reserved. Designed in Taiwan.
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Note: It could be reversed for the pin of VIN- and VIN+.
B.4 Buzzer/LED Message
B.4.1 Buzzer
“ ^ “: Beep twice
“ = “: Beep off
^===^===^===^===^===^===^... (1sec)
Watchdog problem, return service is required
^^^^^^^^^^^^^^^^^^^^^^^...
Memory problem, return service is required
Startup OK but AP firmware is disabled
Startup OK and AP firmware is enabled
B.4.2 LAN LED
Data is transmitting on Ethernet for 100Mbps
Data is transmitting on Ethernet for 10Mbps
B.4.3 COM Port LED
No data is transmitting on COM port
Data is transmitting on COM port
Table 3. COM Port LED Message
B.4.4 RUN LED
Jumper JP1 pin1 and pin2 are short to disable AP firmware in the
flash memory.
LED blinking (rate: 0.5Sec)
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