5. OPERATION
(b-4)
Example of calculating the number of lines per screen
For the ladder shown below, the number of fines in the screen display section is
obtained as follows:
- The valid nets on the display screen are nets A and B.
- Number of lines in net A
Function instruction section + data table section = 6 lines
-I-+
8 lines
(3+1)
(1116)
I
- The number of lines in net B is 2.
ACT
Net A
r
t-
Screen display section
. . . . f . . . .
Net B
: . . . . . . . .
Net C
. . . . . . . . . . .
.
I
I.
000
003
006
009
SUB 49 0011
DISP
0003
T
D300
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0000 0000
0000 0000
0000 0000
0000 0000
. . . . . . . . . . . . . . . . . . . . .
0000
0000
0000
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
........
........
c) Examples of symptoms
Example of symptom (a-l)
-
The ladder diagram can be edited only when the “total number
parameter of the DISP instruction (SUB 49) is less than 396.
the total number of steps is 396, the net consists of 70 lines.
of message data steps”
This is because when
If a net that consists of a total of 396 steps or more is created during mnemonic
editing, the following message appears, and the display of the net is discontinued.
“The data table is too large.”
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