Instruction manual

Fieldbus Interface
133
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. The four status LEDs indicate network and module
status.
Status LEDs Description
Link – steady green Module is connected to network
Status – green flash every 1 sec. IP address is not set by value on the
dip switches
Status – red flash every 1 sec. MAC address is not correct. The
module will not be able to initialize
Status – red flash every 2 sec. Module failed to load configuration
from the FLASH memory
Status – red flash every 4 sec. Internal error
Modbus/TCP connection – flashes
green to indicate number of
connections.
Connection established
Activity – flashes green/off2 Packet received or transmitted
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
Status
Activity
Link
Modbus/TCP
connection