Omron NT31 Operation Manuals page 655

Specifications
Display Restrictions
Apart from the restrictions on the maximum number that can be displayed, the following restrictions apply to individ-
ual elements.
S Restrictions on data reading
With NT31/NT31C, the maximum quantity of data that can be read simultaneously is fixed, and elements that
exceed this data quantity limit are not displayed on the screen. Note that even if the same data is read from differ-
ent elements, each instance is counted separately.
The table below shows the maximum data quantities for each type of read data.
Item
Host bit
Numeral memory tables
Character string memory tables
Bit memory tables
Memory table indirect references
Background memory tables
The data quantity restrictions for each type of element read are indicated in the table below. Ensure that the totals
for a displayed screen are within the range restrictions indicated above.
Element
Fixed displays (text, graphics) None
Image data
Library data
Marks
Touch switches
Lamps
Numeral inputs
Character string inputs
Thumbwheel switches
Numeral displays
Character string displays
Bar graphs
Analogue meter
Broken line graphs
644
Maximum data quantity
1024
1024
1024
1024
100
128
None
None
None
Zero to two host bit (number of host bits set with touch switch property)
One host bit
One numeral memory table
One character string memory tables
One numeral memory table
Direct specification One numeral memory table
Indirect specification One numeral memory table
One memory table indirect reference
Direct specification One character string memory table
Indirect specification One character string memory table
One memory table indirect reference
One numeral memory table
When numeral memory tables are designated for each of the "−100%", "0%", and
"100%" settings for each graph line, one numeral memory table is read for each of these
settings.
One numeral memory table
When numeral memory tables are designated for each of the "−100%","0%", and
"100%" settings for each graph line, one numeral memory table is read for each of these
settings.
Number of numeral memory tables determined by "number of graph lines"
vertices"
When numeral memory tables are designated for each of the "−100%", "0%", and
"100%" settings for each graph line, one numeral memory table is read for each of these
settings.
Restriction on Read Data
APPENDIX A
"number of