Bit Memory Table - Omron NT30C-ST141-E Operation Manual

Memory Tables

4-4-3 Bit Memory Table

Functions of Bit Memory Table
Bit Memory Table Settings
140
The bit memory table is an internal memory area for bit data.
The NT30/30C can use a maximum of 256 bit memory table entries. One bit sta-
tus in the PC can be stored in a single bit memory table entry.
There are two functions of the bit memory table.
S Screen Changeover Function
When a bit in the PC to which a bit memory table entry is assigned changes
from 0 (OFF) to 1 (ON), the screen changes to show the screen set for that bit.
Screen number
11 displayed
S Alarm Function
When a bit in the PC assigned to the bit memory table entry is 1 (ON), the char-
acter string memory table entry and image or library data set for it are dis-
played. Smaller bit memory table entry numbers are displayed preferentially
when multiple bit memory table entries have been set to the alarm list function,
enabling setting the order of priority for messages displayed using the bit
memory table. For details, refer to the 4-11 Alarm List & History Display Func-
tions (page 180).
Character string table
entry No. 32
Image data
FE68
Message (character string table
entry No. 32) and image data
(FE68) set for bit memory table
entry number 14
When a bit memory table entry is used, it is necessary to perform the following
settings for each table entry before creating the screen data with the NT-series
Support Tool. For the settings used for alarm list and history display function, re-
fer to the 4-11 Alarm List & History Display Functions (page 180).
S Recording in the Alarm History
This setting is to determine whether a change of PC Bit to which the bit memory
table entry is assigned is recorded in the Alarm History.
S Screen Changeover Function
This setting is to determine whether the bit memory table entry is used for the
screen changeover function.
S Character String Memory Table Entry Number
This setting is the character string memory table entry number displayed as a
message. This setting is not necessary for the screen changeover function.
No. 1
Screen number 10
No. 2
Screen number 11
No. 3
Screen number 12
No. 13
Character string table
entry No. 50
Image data FE52
No. 14
Character string table
entry No. 32
Image data FE68
No. 15
Character string table
:
entry No. 54
Library data FD34 :
Section 4-4
Bit
PC
0
0
1 (ON)
0
Bit
PC
0
0
1 (ON)
0