NT30-KBA04 Omron, NT30-KBA04 Datasheet - Page 279

• Manufacturer Part Number: NT30-KBA04
• Description: ANTI GLARE COVER FOR NT31
• Manufacturer: Omron

Specifications of NT30-KBA04

• Leaded Process Compatible: No
• Peak Reflow Compatible (260 C): No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

NT30/30C Internal Processing
S Number of Words for Screen Element Registration
S Order of Priority for Registration
268
The number of words used for screen element registration is as follows.
Allocated words:
Allocated bits:
Example:
The number of words assigned to character string memory table and numeral memory table is as follows:
The assignment for bits is as follows:
The total is therefore 44 words + 2 words + 1 word = 47 words
Elements occupying up to approximately 120 words, calculated in this way, can be registered. If the number of
elements is larger than this, internal processing is increased in proportion to the excess number and this gener-
ates a delay in processing.
If the point where the quantity that can be registered is exceeded is in the middle of an element that spans sever-
al words (for example a character string memory table), registration is quit without registering that element.
If there are bit memory table entries that have been set to be read continuously, the requirement for this proces-
sing is also registered. If the number of such bit memory table entries is large, processing will be delayed.
Elements are registered in the following order of priority according to their type.
(1) Allocated words of the PT status control area
(2) Allocated bits for control (lamps, lamp bits of touch switches, bit memory table entires)
(3) Allocated words of numeral memory table
(4) Allocated words of character string memory table
If there is more than one element for each of (2) through (4), the elements are registered in accordance with the
following priority of word and bit areas:
(1) Data memory (DM)
(2) I/O relays (CH)
(3) Timers (TIM)
(4) Counters (CNT)
(5) Holding relays (HR)
(6) Auxiliary relays (AR)
Within each area, words and bits are allocated from the smallest number up.
Character string memory table:
Numeral memory table:
Allocated bits for control:
12 words ¢ 3 + 2 words ¢ 4 = 44 words
19 I/O relays 16 = 1 word with a remainder of 3 bits → 2 words
7 link relays 16 = 0 words with a remainder of 7 bits → 1 word
Number of words
Number of words calculated by summing the number of bits in each area and taking 1 word
to be 16 bits.
3 of 12 allocated words each
4 of 2 allocated words each
19 I/O relays, 7 link relays (contiguous bits)
Appendix D