User`s manual

7-4 INP-TN5A0202-E
7.1 Error procedure
Troubles Causes Solutions
PWR indicator: RED light
Response monitoring time of a
programless communication module
is short (Timeout occurs between PLC
and a programless communication
module)
Set longer PLC response monitoring
time
5-15
of a programless
communication module
Capacity of the fi le register has not
been set for the PLC parameter
setting by using the fi le register (R
or ZR) for the device type in the
Setting/Monitor area of a programless
communication module
The fi le register capacity setting is
necessary by the PLC parameter setting.
Set the fi le register capacity and check the
operation
MELSEC-A series being used and
the check of RS-232C CD terminal is
enable
Make the CD terminal disable by ladder
program
MELSEC-FX series being used
and type 2 is set for MC protocol
of the programless communication
module's parameter or "0" is set for
MC protocol frame type
Set type 4 for MC protocol and "1" for MC
protocol frame type with PUM parameter
loader, and then restart
St. Nos of a programless
communication module are
duplicated, even during 1:N
connection
Set St. Nos of the programless
communication module not to be duplicated
PWR indicator: RED blinking
(0.4-sec inter-cycle)
The parameter value registered for
the programless communication
module is invalid value
Check the error code of Setting error
5-18
, write the correct parameter
set value on the PUM parameter loader,
and then restart
SW setting is invalid value
Check the error code of Setting error
5-18
, modify it to the correct
setting, and then restart
The combination of parameter's
content and the SW setting set to the
programless communication module
is not correct.
Check the error code of Setting error
5-18
, modify it to the correct SW
setting/modify it to the correct set value on
PUM parameter loader, and then restart
PWR indicator: RED blinking
(irregular)
Response monitoring time of a
programless communication module
is short (Timeout sometimes occurs
between PLC and a programless
communication module)
Set longer PLC response monitoring
time of a programless communication
module, or increase Number of retry times
5-15
Data in the all modules can not be
readout
(Even if set the Reading demand
fl ag and Parameter setting demand
fl ag for PLC setting area, data
cannot be readout)
Programless communication is
in a rest state (Command setting
response fl ag "EEEEh" or "FFFFh")
Demand the communication restoration by
using the Command setting demand fl ag in
the PLC setting area
Inter-module connection failure Check the inter-module connection
The unit failure Replace the module