Omron NT31C Reference Manual page 303

Screen Display and Notification
Reference:
Operation
1, 2, 3...
Reference: The screen of the PT is switched at the timing the status of the bit to which the bit
Switching the Screen Using the Screen Switching Function of the Alarm List/History
Function
292
The screen numbers that can be specified are:
• 0001 to 3999:
Screen No. 1 to No. 3999
• 9001:
Occurrence history screen
• 9002:
Frequency history screen
• 9020:
Programming Console function screen
• 9021 to 9023:
Device Monitor function screens
• 9030:
Brightness and contrast adjustment screen
• 9999:
Return to the previous screen
S To display overlapping screens, specify the screen number of a parent screen.
S The screen is not switched if elements have not been registered to the speci-
fied screen number.
1. Set the bit in the host to which the bit memory table with the Switch Screen
function is allocated to 1 (ON) when switching the screen.
2. After making sure that the screen has been changed over from the data by
referring to the screen switch setting word in the PT status control area or
other data, return the bit in the host to 0 (OFF).
memory table is allocated is changed from 0 (OFF) to 1 (ON). Please note that
the screen is not switched if it is changed from 1 (ON) to 0 (OFF).
This method allows the screen to be switched to the screen corresponding to the
message displayed by the alarm list/history function.
The alarm list/history function monitors bits in the host via a bit memory table. If
the specified bit in the host is turned to 1 (ON), the function displays the corre-
sponding message (character string memory table) or image data/library data.
The function can also switch over the screen to a specified one.
Section 3-3