Delta Electronics Extension Digital I/O Module DOP-EXIO14RAE - Manual (Page 72)

Appendix C Use of Basic Instructions|DOP-EXIO Series
Revision March, 2008, Doc. Name: 2007PDD23000014 C-7
Explanations:
When TMR instruction is executed, the designated coil of the timer will be On and the timer will start to
time. When the set value in the timer is reached (present ≥ set value), the contact will be:
NO (Normally Open) contact Open collector
NC (Normally Closed) contact Close collector
Program Example:
Ladder diagram:
Instruction code: Operation:
LD X0 Loading in contact A of X0 T5 timer X0
T5 TMR K1000
TMR T5 K1000 Set value in timer T5 as K1,000
Mnemonic Functions
CNT 16-bit Counter
C-K C0~C127, K0~K32,767
Operand
C-D C0~C127, D0~D599
Explanations:
1. When the CNT instruction goes from Off to On, the designated counter coil will be driven, and the
present value in the counter will plus 1. When the counting reaches the set value (present value =
set value), the contact will be:
NO (Normally Open) contact Open collector
NC (Normally Closed) contact Close collector
2. If there are other counting pulse input after the counting reaches its target, the contact and
present value will stay intact. Use RST instruction to restart or reset the counting.
Program Example:
Ladder diagram:
Instruction code: Operation:
LD X0 Loading in contact A of X0 X0
C20 CNT K100
CNT C20
K100 Set value in counter C20 as K100
Mnemonic Functions
DCNT 32-bit Counter
C-K C235~C254
Operand
C-D C235~C254, D0~D598
Explanations:
1. DCNT is the instruction for enabling the 32-bit high-speed counters C235 ~ C254. The method of