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Starting Operation Section 6-8
6-8 Starting Operation
After completing screen data transmission and setting the communications
conditions, connect the NT631/NT631C to the host and start operation.
Note Check the operation of all screen data and host programs carefully before
using them. If incorrect, the system may operate unpredictably.
Switching to the RUN
Mode and Starting
Operation
Press the Quit touch switch on the System Menu screen or other screen. The
NT631/NT631C switches to the RUN mode and starts operation.
The operation at the start is as follows.
Display of The System Initialization Screen
When establishing the communications with a host, the System initializing
character string is displayed on the screen. If the communications with the
host cannot be established, the System initializing screen remains up. If this is
the case, check the settings at the host and the PT side, the cables and wir-
ing.
In addition, creating screen number 9000 enables the display of a screen
other than the System initialization screen.
Transmission of The Contents of Memory Tables
If the Resume Function memory switch is set to ON, or if the initial values of
the memory tables are used, the contents of the numeral/character-string
memory tables are copied to the allocated words at the host.
↓
Display of The Startup Screen
The startup screen is displayed on reading the contents (screen number of
the screen to be displayed) of the first word of the PT status control area.
If the contents are not correct for a screen number, or there is no data regis-
tered for the set screen number, an error message is displayed.
Confirming the
Communications between
the NT631/NT631C and the
Host
Execute the host program and confirm that the following operations are per-
formed normally.
• Confirm that the NT631/NT631C screens switch in accordance with the
host program.
If the screens do not switch correctly, check the connection between
the host and the NT631/NT631C, and also check if the hardware set-
tings are correct. For details, refer to SECTION 4 Connecting to the
Host from the RS-232C Port, or SECTION 5 Connecting to the Host
from the RS-422A/485 Port.
• Confirm that the operation results of touch switch and numeric value/char-
acter string input at the NT631/NT631C are sent to the host correctly by
displaying the contents of the host words and bits using a Programming
Device (e.g. CX-Programmer).
If the results of operations at the NT631/NT631C are not sent to the
host correctly, check the setting of the display elements. For details on
setting display elements, refer to the description of each display ele-
ment in the Reference Manual.