ProSoft Technology AN-X-MOD - Manual (Page 74)

Page 70 AN-X-MOD (Master) November 2011
Troubleshooting
LEDs
The AN-X-MOD (Master) has LEDs that indicate the state of the
Ethernet connection, the overall module state and the connection to
S908 remote I/O network.
Ethernet LEDs
There are two LEDs that indicate the state of the Ethernet connection.
The orange LED, labelled 100, is on if the link is running at 100
Mbits/second and is off otherwise.
The green Link/Act LED is off if the link is inactive and is on if the link
is active. If activity is detected, the link blinks at 30 ms intervals and
continues blinking as long as activity is present.
SYS LED
The SYS LED is used by the AN-X operating system and software to
indicate the state of operations and errors. Errors or status indication in
boot mode cause the LED to flash yellow. Otherwise, the LED flashes
red.
The SYS LED should be used in conjunction with the logs to locate the
cause of problems.
In the following, red 3 means three red flashes followed by a pause, and
so on.
SYS LED State Possible cause
Red 2 AN-X is in config mode
Red 3 DHCP configuration failed
Red 4 Fatal application error, check logs for cause
Red 5 Application memory access violation, check logs
Red 6 Application failed, illegal instruction, check logs
Red 7 Application crashed, unknown cause, check logs
Fast red flash Reconfiguration (set station number and baud
rate) failed
Single red flash Unscheduled messaging, addressing or
connection problem
Slow red flash Script or application problem during startup