Chapter 14 PLC Function |C200 Series
14-11
numbering in decimal system. The different number range corresponds with
the different timing period.
Data register
PLC needs to handle data and operation when controlling each order, timer value
and counter value. The data register is used to store data or parameters. It stores
16-bit binary number, i.e. a word, in each register. It uses two continuous number
of data register to store double words.
; Equipment indication: D0, D1,…,D399. The symbol of equipment is D and
numbering in decimal system.
The structure of ladder diagram and information:
Ladder Diagram
Structure
Explanation Command Device
Normally open, contact a
LD X, Y, M, T, C
Normally closed, contact b
LDI
X, Y, M, T, C
Serial normally open
AND
X, Y, M, T, C
Parallel normally open OR X, Y, M, T, C
Parallel normally closed ORI X, Y, M, T, C
Rising-edge trigger switch LDP X, Y, M, T, C
Falling-edge trigger switch LDF X, Y, M, T, C
Rising-edge trigger in serial ANDP X, Y, M, T, C
Falling-edge trigger in
serial
ANDF X, Y, M, T, C
Rising-edge trigger in
parallel
ORP X, Y, M, T, C
Falling-edge trigger in
parallel
ORF X, Y, M, T, C
Block in serial ANB none
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Call 1(800)985-6929 for Sales
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