V020-E3-2 Omron, V020-E3-2 Datasheet - Page 169
V020-E3-2
Manufacturer Part Number
V020-E3-2
Description
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Manufacturer
Omron
Datasheet
1.V020-E3-2.pdf
(304 pages)
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5-1-3
Controlling the Display Elements by Using Allocated Bits and Words
Overview of Direct Connection Operations
NT20S Status Control and Notification to PC
Reference: One allocation word of the memory table can use continuous areas of up to 2
words in the case of numeral memory table or 16 words in the case of character
string memory table.
The following describes the fundamentals of the display elements, NT20S status
control, and notification which are the basics of the NT20S functions when using
the host link/NT link.
For the detail method of use of the PT status control area and the PT status notify
area, refer to Sections 5-4 NT20S Status Control (page 191) and 5-5 Notification
of the Operating Status to the PC (Determining the NT20S Operating Status)
(page 196).
The NT20S will operate as follows in the display element control operation.
[NT20S operation]
(1) The NT20S checks the allocation bits and words of the display elements and
(2) The PC answers the NT20S about the bit and word data.
(3) The NT20S changes the display status according to the bits and words ob-
[NT20S operation example]
makes an inquiry to the PC.
tained from the PC.
Character-string memory table2
First word
Number of saved words : 3
Lamp #0
Bit 010012
: DM0100
NT20S
Numeral memory table0
First word
Number of saved words : 1
DM0100 to DM0102?
Bit 010012?
TIM003?
: TIM003
PC
(“a”, “b”)
(“c”, “d”)
(“e”, “f”)
Section 5-1
153
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