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Communications by Rs-232C
Section 1-6
1-6 Communications by RS-232C
This section gives a brief description of the NT20S control commands sent from
the host through the RS-232C interface when the NT20S-ST128 is used.
' For details of each of the commands sent through the RS-232C interface, refer
to Section 6 “Using the RS-232C”.
Control of the NT20S by a Host is executed by two kinds of commands supported
by the RS-232C interface which is built into the NT20S.
Operation commands Operation commands are used to control the display and status of the running
NT20S as well as to notify information.
They are used for purposes such as screen display, data writing, and enquiries.
Notification of the NT20S operation contents to the Host.
Terminal commands Terminal commands are used to use the NT20S as a display terminal of the Host.
When the NT20S is used as a display terminal, it can display characters and fig-
ures in accordance with instructions given by the Host, independently of the
screens registered to the NT20S.
These commands are also used if unexpected problems occur.
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