645
Specifications
APPENDIX A
Element
Restriction on Read Data
Trend graphs
Data logging
function not used
Number of numeral memory tables determined by the number of
graph lines
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.
Data logging
function used
Number of background memory tables determined by the
number of graph lines
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.
Alarm lists
Number of bit memory tables referenced.
Alarm history
None
S
Restrictions due to element coefficients
The NT31/NT31C uses “element coefficients” to manage display elements. The maximum number of display
coefficients that can be used at the same time is 1024.
If the total of the element coefficients on a screen exceeds 1024, the elements after this total has been reached
are not displayed.
The element coefficients for each element are indicated in the table below. Ensure that the total for the screen to
be displayed is not greater than 1024.
Element
Element Coefficient
Fixed displays (text, graphics)
1, regardless of how many there are on the screen
Image data
Library data
Marks
Touch switches
1
Lamps
1
Numeral inputs
1 (or 2 if there is a cursor moving key touch switch) + number of dedicated touch
switches
Character string inputs
1 (or 2 if there is a cursor moving key touch switch) + number of dedicated touch
switches
Thumbwheel switches
1 + number of displayed digits
2
Numeral displays
1
Character string displays
1
Bar graphs
1
Analogue meter
1
Broken line graphs
1
Trend graphs
1 + number of dedicated touch switches
Alarm lists
1 + number of display lines + number of dedicated touch switches
If image/library data is displayed, the total is increased by another 64.
Alarm histories
1 + number of display lines + number of dedicated touch switches
If image/library data is displayed, the total is increased by another 64.
Summary of Contents for NT31 Series
Page 1: ...Cat No V043 E1 2 Programmable Terminal NT31 31C OPERATION MANUAL...
Page 2: ...iii NT31 31C Programmable Terminal Operation Manual Produced March 1999...
Page 41: ...30 Before Operating Section 1 5...
Page 75: ...64 Using a Memory Unit NT31 NT31C without V1 Section 3 6...
Page 160: ...149...
Page 174: ...163...
Page 193: ...182...
Page 211: ...200...
Page 235: ...224 c Return to the screen on which screens are specified...
Page 262: ...251...
Page 360: ...349 It is not possible to control a gloval window by touch switch operation...
Page 468: ...457 254 255 0 2 7 1 4 5 3 3 0 0 0 5 9 8 0 3...
Page 476: ...465 Special Functions Section 7 16...
Page 495: ...484 OFF...
Page 610: ...599 Commands Responses Section 9 3...
Page 630: ...619 Examples of Actual Applications of Memory Link Section 10 2...