91
Appendix C
Memory Check Table
This table shows the amount of memory required for creating various kinds of screen data. It can be used a stan-
dard for selecting screen memory.
Data
Item
Without direct
connection
(Unit: byte)
With direct
connection
(Unit: byte)
Remarks
Tables, error screens,
etc.
File units
13,480
20,146
Minimum amount re-
quired for lower limit.
Basic information
Single screen units
W/o history:
10
With history:
34
62
Number of screens re-
quired.
Link information
Normal screens only
2
4
q ed
Each header
Command units
Fixed information:6
Other:
4
6
Required first time
only.
Character input
1 character
14
14
Fixed information
p
1 character added
+1
+1
1 byte added when all
sums are odd num-
bers.
Polyline
One
10
10
---
y
One added
+4
+4
Circle
---
6
6
Standalone
---
8
---
Character string dis-
play
---
12
16
Variable information
Numeric display
---
12
16
Bar graph
---
24
38
No guide characters
16
30
---
Touch switch
1 guide character
+12
+12
1 character added
+1
+1
1 byte added when re-
sult is odd number.
Lamp
Circle: no guide char-
acters
16
30
---
Rectangle: no guide
characters
16
34
1 guide character
+12
+12
1 character added
+1
+1
1 byte added when re-
sult is odd number.
Numeric setting
---
4
18
---
Function key
---
---
18
Overlapping screen
---
18
18
Basic screen informa-
tion added regardless
Continuous screen
---
18
18
tion added regardless
of number of child
screens.
Note
If the edge of a screen goes beyond 64K bytes, the data will move to the next page
(when 128 bytes or 256 bytes). 32K bytes = 32,768; 64K bytes = 65,536; 128K bytes = 131,072;
256K bytes = 262,144
I/O headers:
62 bytes (even for only one) + number x 20 bytes
Summary of Contents for NT600M Series
Page 1: ...NT600M Programmable Terminal Operation Manual Revised October 1997 ...
Page 2: ...iv ...
Page 4: ...vi ...
