AccuWeb MICRO 4000 NET, Instruction Manual

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The module is equipped with four status LEDs mounted at the front of the card and one watchdog
LED mounted in the middle of the card, used for debugging purposes. The function of the LEDs is
described in the figure and tables below. Of the four status LEDs, two of them indicate network
and module status, and the other two are reserved for future use.
Reserved Network status
Reserved Module status
Status LEDs Description
Module status – steady off No power
Module status – steady red Unrecoverable fault
Module status – steady green Device operational
Module status – flashing red Minor fault
Network status – steady off Not powered / not on-line
Network status – steady green Link OK, on-line, connected
Network status – steady red Critical link failure
Network status – steady flashing green On-line, not connected
Network status – steady flashing red Connection time-out
Watchdog LED Color Frequency
No firmware exists Red 8Hz
Firmware downloading Red/Green 1Hz
ROM check fault Red 2Hz
Module not initialized Green 2Hz
Module initialized and running OK Green 1Hz
RAM check fault Red 1Hz
DPRAM check fault Red 4Hz
Fieldbus Interface 118
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