Delta C2000 Series User Manual page 508

Description of Function
Device type
A timer is used to complete control of timing. The timer contains a coil, contact,
and a time value register. When the coil is electrified, if the preset time is reached,
the contact will be actuated (contact a will close, contact b will open), and the
timer's fixed value be given by the set value. Timer has a regulated clock cycle
(timing units: 100 ms). As soon as power to the coil is cut off, the contact will no
Timer
longer be actuated (contact a will open, contact b will close), and the original
timing value will return to zero.
When a PLC is used to perform various types of sequence control and set time
value and count value control, it most commonly perform data processing and
numerical operations, and data registers are used exclusively for storage of data
and various parameters. Each data register contains 16 bits of binary data, which
Data register
means that it can store one word. Two data registers with adjacent numbers can
be used to process double words.
Ladder diagram images and their explanation
Ladder diagram
structures
Device indicated as: T0, T1 to T159, etc. The device is expressed as the
symbol "T," and its order is expressed as a decimal number.
Device indicated as: D0, D1 to D399, etc. The device is expressed as the
symbol "D," and its order is expressed as a decimal number.
Explanation of commands
NO switch, contact a
NC switch, contact b
Series NO
Series NC
Parallel NO
Parallel NC
Positive edge-triggered
switch
Negative edge-triggered
switch
Positive edge-triggered
series
Negative edge-triggered
series
Positive edge-triggered
parallel
Negative edge-triggered
parallel
Block series
16-16
Command Using Device
X Y M T C
LD
X Y M T C
LDI
X Y M T C
AND
X Y M T C
ANI
X Y M T C
OR
X Y M T C
ORI
X Y M T C
LDP
X Y M T C
LDF
X Y M T C
ANDP
X Y M T C
ANDF
X Y M T C
ORP
X Y M T C
ORF
ANB N/A