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Screen Display and Notification
Section 8-3
8-3 Screen Display and Notification
This section describes the each procedure for changing and checking the screen
displayed by the NT31/NT31C.
8-3-1 Switching the Screen
The NT31/NT31C provides the following four methods for switching the screen.
- Operation at the PT status control area
- Pressing a touch switch that has the “Switch Screen” function
- Using the screen switching function in the bit memory table
- Using the screen switching function of the alarm list/history function
Switching the Screen by the Operation at the PT Status Control Area
With this method, the screen can be switched to the required screen at the re-
quired time by the command given by the host.
Designated screen
PCNT31/NT31C
← Screen number
PT status control area
Screen switch setting
Copy memory
table setting
PT status control setting
Reserved for system use
[Setting]
The PT status control area must be allocated to a word in the host, accordingly, no
special settings are required for the control of buzzer.
[Operation]
At the beginning of the PT status control area (word n), there is an area (screen
switch setting area) for the screen switching command and screen number notifi-
cation.
15 14131211109876543210
Word Bit
n Screen No. (4-digit BCD or hexadecimal) Screen switch setting
n + 1
Copy source memory table No.
(4-digit BCD or hexadecimal)
n + 2
Copy destination memory table No.
(4-digit BCD or hexadecimal)
Copy memory table
setting
n + 3 PT status control bits PT status control
n + 4
Reserved for system use
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