7-2SectionResponding to Displayed Error Messages
177
7-2-1 Errors Occurring at Start of Operation and Their Remedies
The
table below shows the errors that
can occur when the power to the NT21 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
Conditions for Communications with Host
by Using Memory Switches
, page
125)
[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
110)
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 NT
Support Tool.
No screen data is registered. Transmit screen data from the NT
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 NT 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
NT Support Tool and then transmit the
direct connection information to the
NT21.
[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
NT21.
Initialize the screen data memory
, then
transmit the correct screen data. (6-4-1
Clearing Screen Data
, page
110)
[No Starting Screen]
Specified Starting Screen is not saved.
Fix Screen Data using by the NT
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 NT Support
Tool.
Or screen numbers that do 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 NT
Support Tool.
[Memory Switch Corrupted]
Because Memory Switch setting was
lost. Initialized Memory Switch setting.
Press Confirm to return to the SYSTEM
MENU.
The memory switches have been
initialized due to discovery of an
error in the memory switch
settings.
Set the memory switches again using the
System Menu and the System settings
under PT Configuration at the NT
Support T
ool. (
Section 6 System Menu
Operation)
If the problem recurs, contact your
OMRON service center.
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