Delta AS Series Programming Manual page 570

API Instruction code
1008 D SPD
Device X Y M
S
1
S
2
D
Data
type
S
1
S
2
D
Symbol
Explanation
1. This instruction requires that you use S
counter numbers above HC200 (including HC200).
2. The time units for S (the setting value for the cycle time) are millisecond (ms). The setting must be between 10–
2
1000. When the value is out of range, the PLC executes the instruction with S
maximum value and there are no error messages.
3. When the count reaches the setting value in S
by D, and is not affected by the PLC scan cycle.
4. This instruction has no limitation when editing, but it only allows eight sets of speed detection instructions to run
simultaneously. The system ignores the ninth set of the speed detection instruction and there are no error
messages. When executing this instruction, the setting values for the operand are recorded, and during the
execution of this instruction, you cannot edit the parameters.
Operand
S , S , D
1 2
S T C HC D





Pulse instruction
with the DCNT instruction (API 1004) to enable the high speed counter with
1
, this instruction stores the number of pulses in the device specified
2
Ch ap te r 6 Ap pl ie d Instruc ti ons
FR SM SR E



16-bit instruction
－
-
： Counter value
S
1
： Setting value for the cycle time
S
2
D ： Number of pulses from the previous scan cycle
at the minimum value or the
2
Function
Detecting speed
K 16# "$" F
 

32-bit instruction
AS
6 - 2 9 1
6_