Omron NT - SUPPORT TOOL FOR WINDOWS V4 Operation Manual page 182

Alarm
Reference: With the NT21, NT31, NT31C, NT631, and NT631C, if image/library data is larg-
S If the size of the image/library data is smaller than the display area, the image/
library data is displayed taking the lower left corner of the display area as the
reference.
er than the image/library data display area, the area exceeding the display area
will not be displayed on PT while the whole data is displayed on the Support Tool.
Be sure to set image/library data display area so that image/library data fits inside
it.
S For an alarm history element, the property settings, bit memory table entry, and
character string memory table entry (string table) are related to each other as
shown below.
Displayed
at ON
Alarm list
ABC 02/12
S An alarm history element is used in combination with the bit memory table
entry. How they function is shown below:
Setting at bit memory table entry
S Setting at Set dialog box
PLC Address
S Setting at Function dialog box
History
Screen No.
Switch Screen
Screen No.
Image/library data display area
Image/library data
History data
H0001512 97/02/12 10:51
Bit memory table
Character string memory
table entry (String table) :10
Image/library data :FE20
PC (PLC) address :H0001512
Number of bits; Set for No. of Bits
Referenced
table entry No.: Set for Start Bit
Table Entry
Section 6-3
Character string
memory table
(String table)
10 ABC
11 DEF
12 GHI
13 JKL
Image data
FE20
Specified PC
(PLC) bit
169