Inovance GL20-RTU-PN - Fault Diagnosis; ERR LED Indicator Faults

‑23‑
4 Fault Diagnosis
LED Indicator
Status (see "
1.2
Components
"
on page 8 )
Fault Description Cause Solution
ERR Solid
on
(red)
Protocol stack failed
to scan for modules
Expansion module does
not exist
Check that the module
is installed properly and
supplied with power
Local bus
communication failure
Check the contact of
the communication
interface of the
expansion module or
restart the whole
system
Flash‑
ing
(red)
● The number of I/O
modules configured
is more than the
number of I/O
modules actually
scanned
● The number of I/O
modules configured
is less than the
number of I/O
modules actually
scanned
● The type of I/O
modules configured
is inconsistent with
that of the I/O
modules actually
scanned
The actual slot of the
expansion module is
inconsistent with the
configuration
Check the number and
installation sequence of
expansion modules
Local bus
communication failure
Check the contact of
the communication
interface of the
expansion module or
restart the whole
system
Share_in/Share_out
module position or
number error
Share_in or Share_out
module should be
placed at the end of the
module list. Only one
Share_in module and
one Share_out module
are allowed.
Check the slot or
number of Share_in or
Share_out modules