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Responding to Displayed Error Messages
Section 11-2
11-2 Responding to Displayed Error Messages
When the NT31/NT31C displays an error message, find the corresponding symp-
toms in the appropriate table below and respond by following the “Remedy” indi-
cated in the table.
For details of the error messges displayed when using memory unit and corrective
action to take for them, refer to 3-5 “Using a Memory Unit (NT31/NT31C with V1)”
in page 46 or 3-6 “Using a Memory Unit (NT31/NT31C without V1)” in page 57.
11-2-1 Errors Occurring at Start of Operation and Their Remedies
The table below shows the errors that can occur when the power to the
NT31/NT31C is turned ON and when operation starts, and their remedies.
Message Cause Remedy
[No Comm. Protocol]
Set the comm. Protocol by
MAINTENANCE MODE.
No communication protocol has
been set.
Communication protocol and
screen data type are mismatched
Using the memory switches, set the
communication method to be used for
communication with the host. (6-7 “Setting
the Conditions for Communications with the
Host by Using the Memory Switches”, page
174)
[Screen Data Error]
Screen Data corrupted.
Initialize Screen Memory, and download
Screen Data again.
- The power was switched OFF
during screen data
initialization, checking, or
transmission.
- Transmission of screen data
was interrupted.
- Illegal data has been written to
the screen data memory.
Initialize the screen data memory by
operation at the System Menu, then
re-transmit the screen data. (6-4-1
“Clearing Screen Data”, page 157)
If the problem persists, contact your
OMRON service center.
[No Screen Data]
No Screen Data is saved in Screen
Memory.
Download Screen Data using by the
Support Tool.
Then set the PT to the TRANSMIT
MODE, and download Screen Data
again.
No screen data is registered. Transmit screen data from the Support
Tool.
[No Direct Connection Info.]
No Direct Connection Information is set
in Screen Data.
Set Direct Connecting Information in
Screen Data using by the Support Tool.
Then set the PT to the TRANSMIT
MODE and download Screen Data
again.
Allocated words have not been
set for the PT status control area
and PT status notify area.
Allocate words for the PT status control
area and PT status notify area with the
Support Tool and then transmit the direct
connection information to the NT31/NT31C.
[Incorrect Screen Data]
Screen Data in Screen Memory do not
match with the System Program.
Initialize Screen Memory, and download
Screen Data again.
The type of registered screen
data does not match that at the
NT31/NT31C.
Initialize the screen data memory, then
transmit the correct screen data. (6-4-1
“Clearing Screen Data”, page 157)
[No Starting Screen]
Specified Starting Screen is not saved.
Fix Screen Data using by the Support
Tool.
Then set the PT to the TRANSMIT
MODE and download Screen Data
again.
No data is registered for either
the screen number set in the PT
status control area or the “Initial
Screen” set with the Support
Tool.
Or the screen number which
does not exist are registered.
Either specify a screen number for which
data is registered at the PT status control
area, or set the screen as the “Initial
Screen” in the “System” settings under “PT
Configuration” at the Support Tool.
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