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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 NT31/NT31C 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
NT31/NT31C 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 NT31/NT31C and the
Host
Execute the host program and confirm that the following operations are per-
formed normally.
• Confirm that the NT31/NT31C screens switch in accordance with the host
program.
If the screens do not switch correctly, check the connection between
the host and the NT31/NT31C, and also check if the hardware settings
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 NT31/NT31C are sent to the host correctly by dis-
playing the contents of the host words and bits using a Programming
Device (e.g. CX-Programmer).
If the results of operations at the NT31/NT31C are not sent to the host
correctly, check the setting of the display elements. For details on set-
ting display elements, refer to the description of each display element
in the Reference Manual.
6-9 System Settings
The NT31/NT31C allows a variety of functions which are convenient during
operation to be set with memory switches. This section describes the memory
switch settings relating to the operation environment.
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