Starting The Nt21; Operation At Startup - Omron NT21 - SETUP MANUAL 10-2001 Setup Manual

Starting the NT21

6-2

Starting the NT21

6-2-1 Operation at Startup

Initial Processing
Memory Unit Check
Screen Data and System
Program Checks
Start of Communication
with the Host
Operation Start
104
After checking that the hardware has been connected correctly, switch on the
power to the NT21 to start it up.
This section describes the operation of the NT21 when it is started up.
The NT21 operates as follows when the power is switched ON.
Self-checking — including a check on the internal memory of the NT21 and a
system program check — and the internal processing required for startup, is
performed.
If an error occurs during initial processing, an error screen is displayed.
If there is an error in the system program, the system program must be re-
installed. For details on the installation procedure, refer to 6-5 Operations in the
System Installer Mode (page 118).
Check if a Memory Unit is installed. If a Memory Unit is installed, processing
(screen data and system program reading/writing) is executed in accordance
with its DIP switch settings (page 31).
If there is an error in the screen data stored in the NT21, an error screen is dis-
played. Pressing the OK touch switch on the error screen will return the display
to that just before the error occurred. It is also possible to display the System
Menu from the error screen by pressing two of the four corners of the touch panel
simultaneously. If there is an error in the system program, the main menu of the
system installer mode is displayed. In this case, reinstall the proper system pro-
gram.
Initialize the memory or change the settings as required.
Communication with the host starts in accordance with the communication
method set in the system memory of the NT21. During the interval until commu-
nication is established, the system initialization screen (screen No. 9000) is dis-
played.
For details, refer to 6-8 Starting Operation (page 133).
When communications cannot be established properly, the system initialization
screen will remain on. In this case, display the System Menu by pressing two of
the four corners of the touch panel simultaneously, and check the settings for the
communication conditions for communication with the host again. Also check
the communications cables and connections.
The RUN mode is established, and operation starts in accordance with the
screen data in the NT21.
When changing the settings or checking the statuses, perform the appropriate
operation by displaying the System Menu. For details on displaying the System
Menu, refer to 6-3-3 Operations with the System Menu (page 108).
Section 6-2