Chapter 12 LED Indicators and Troubleshooting
GFK-2958E RSTi-EP User Manual 401
Green: Connection established
between port 2 of the network
adapter and another field device
Green flashing: Data being
exchanged on port 2
Off: Network adapter in INIT state
Green flashing: Network adapter
in PRE-OPERATIONAL state
Green lights up briefly: Network
adapter in SAFE OPERATIONAL
state
Green: Network adapter in
OPERATIONAL state
Red: Critical error in the network
adapter
Check that the ESI file is up-to-date. Check if
the configured station setup matches the
actual setup
Check that the network adapter firmware is
up-to-date. Compare the master cycle time
with the time set up on watchdog timer
Red lights up briefly: Error in the
network adapter application
Red lights up briefly twice:
Output of the sync manager
watchdog out-of-date
Red flashing: Configuration error
Green: Supply voltage for input
current path > 18 V DC
Red: Supply voltage for input
current path < 18 V DC
Red: Internal fuse defective
Replace the network adapter
Green: Supply voltage for output
current path > 18 V DC
Red: Supply voltage for output
current path < 18 V DC
Red: Internal fuse defective
Replace the network adapter