74
INP-TN5A1634-E
9
Troubleshooting
The following table lists the trouble symptoms that may appear when the setting of the module-type temperature controller is
made using the PUM parameter loader, their causes, and remedies.
Trouble
Causes
Solution
None of the connected module is
capable of communicating with
the loader software.
Improper PUM parameter loader software
connection
Check that the PUM parameter loader software and
the modules are connected properly.
Improper connection of the PUM
parameter loader connecting cables
Check the connection of the PUM parameter loader
connecting cable. Check if the cable is break or not.
Check if the assembly of the PUM parameter loader
connecting cable is proper or not.
Improper station No. setting
Check if communicating to the correct station
number.
Check if the set station number is duplicated.
Incompatible communication conditions
Check that the communication specifications of
the loader software and those of the module are
compatible.
Several master are defined.
Define only one master.
Only some of the connected
modules cannot communicate
with the PUM parameter loader.
Improper PUM parameter loader software
connection
Check that the loader software is connected to the
master of internal communication between modules.
Parameters can not be changed.
RS-485 communication permission is set
to "Read only".
Change the setting to "Readable/Writable".
The parameter input value tried to write
the value out of the setting range
Change the parameter input value to the one in the
setting range and then write again.
Parameter setting that has not
been changed is changed.
SV value may be changed as a result of
changing the SV value.
Set the SV limit value larger than the SV value. Set
the SV value within the SV limit value range.
The parameter set value for industrial
value display is automatically changed by
change of PV input type, PV scale (Analog
input type, Analog input scale for Analog
module), decimal point position, unit
display.
—
Alarm settings are automatically changed
depending on the setting of DO output
event type.
—
After download, parameter value
was displayed as "-".
When selected an enhanced
communication module, the value to the
register address was set, which can not
be accepted by a module.
Upload (or restart the loader), and restore from
the "-" state, and then set the appropriate register
address.
Parameters are displayed as "–"
after uploading/downloading.
Communication error may be occurring.
Check the communication environment. Check the
master/slave setting in connected modules.
Online mode cannot be used.
Online mode cannot be used if startup
is carried out by clicking "File selection
startup mode".
Start from "Startup mode/Module data reception
launch mode".
