Troubleshooting
11-3
11.3 LED state of the gateway
(1) When the "ERR" LED is lit or is flashing
"ERR" flashes slowly (every second): DP-DN short-circuit error
Items to check
Description of measures
Check that the transmission line (DP, DN) is
not short-circuited
Check that the transmission line (DP, DN) is not
short-circuited.
Check that the pin assignment was correct when
the link connector was crimped.
Check the wiring of the terminal block
Check that there is no contact of the transmission
line (DP, DN) and no miswiring of the terminal
block in the master or slave unit.
Check that the consumption current of the
AnyWireASLINK system meets the
specification
Modify cables (wire diameter, total length) and
units (type, number of connections) so that the
consumption current of all slave units does not
exceed the transmission line supply current value
of the master unit.
"ERR" flashes quickly (every 0.2 seconds): Transmission circuit drive voltage drop error
Items to check
Description of measures
Check the voltage of the 24V DC external
supply power
Make adjustments so that the voltage of the 24V
DC external supply power does not exceed the
rated range (21.6 to 27.6V DC). (Recommended
voltage is 26.4V DC.)
Check that the power line (24V, 0V) is not
short-circuited
Check that the power line (24V, 0V) is not
disconnected or short-circuited. Check that the pin
assignment was correct when the link connector
was crimped.
Check the wiring of the terminal block
Check that the 24V DC external supply power is
properly wired to the master unit and the slave unit
terminal block. Also check that there is no
short-circuit, miswiring, or insufficient tightening of
the screws.
"ERR" is lit: DP-DN (transmission line) disconnection error
Items to check
Description of measures
Check that the transmission line (DP, DN)
is not disconnected
Check connection parts and continuity between
lines.
Check the wiring of the terminal block
Check that there is no miswiring.
Carry out automatic address recognition
ALM lights up at initial continuity.
Carry out automatic address recognition.
