Section 2 NS Series Functions 2-12 Display and Input Objects
2-264
NS Series Programming Manual
Switching Blocks
When blocks are specified, internal memory or the contents of text files are split into a maximum of 32
blocks and the blocks are switched based on the contents (0 to 31) of the allocated address.
Example: If the maximum number of lines set on the General Tab Page is 10, the number of blocks
set on the External Control Tab Page is 3, and the address for switching the display block
is $W0.
PT switches
display to block
List entry 1
•
•
•
List entry 10
List entry 11
•
•
•
List entry 20
List entry 21
•
•
•
List entry 30
Address for Switching
the Display Block
$W0 = 1
Block 0
Line 10
Block 1
Line 10
Block 2
Line 10
List entry 11
•
•
•
List entry 20
The number of lines for each block will be the number set under Maximum No. of lines.
Switching Start Line
The first line currently displayed in a list can be switched based on the contents of the allocated ad-
dress. The first line in a list is counted as line 0.
Example: When the address for switching the display start line is set in $W0.
Line 0
Line 1
Line 2
Line 3
List entry 1
List entry 2
List entry 3
List entry 4
•
•
•
List entry 3
List entry 4
•
•
•
Address for switching the
display start line $W0 = 2
List entry 3 is
displayed first.
Update a List
The list display will be updated when the contents of the allocated address are changed.
Update a List is required in the following circumstances.
• When the string data of an address being referenced changes.
• When the string in a list file being referenced changes.
• When labels have been switched.
Section NS Series Functions
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