Delta AS Series Programming Manual page 556

8. Since AS Series PLC is with various built-in input types, different maximum input frequency are suggested. See the
table below for reference. It is possible that the maximum input frequency cannot be reached for the sinking and
souring type. If the output type is normally open (NO) and the drive current is insufficient. Refer to Chapter 4 from
AS Series Hardware and Operation Manual for more information on wiring.
Model Name
AS324MT-A
AS332T-A
AS332P-A
AS320T-B
AS320P-B
AS300N-A
AS228T-A
AS228P-A
AS228R-A
AS218TX-A
AS218PX-A
AS218RX-A
Example 1
NETWORK1:
When PLC runs, the value of the counter HC0 is cleared and the counter counts because SM621 is OFF. At this time,
SM408 is ON for the first time. So the instruction loads the setting value 10 to the counter HC0 and the counter begins
counting.
NETWORK2:
After SM408 switches from OFF to ON ten times, the value of the counter HC0 matches the setting value 10, and the
contact of HC0 is ON. After HC0 is ON, the value of the counter keeps increasing because SM408 continues to change
from OFF to ON even though the value of HC0 has reached the setting value.
NETWORK3:
When HC0 continues to count up and the value reaches the setting value 20, the counter counts down because SM621
is ON in the program. After SM408 switches from OFF to ON ten times and the value of HC0 decreases from 10 to 9, the
contact of HC0 is OFF.
After the contact of HC0 is OFF, the value of HC0 still continues to decrease because SM408 continues to change from
OFF to ON.
Input Type
Differential
Sinking / Sourcing
Sinking / Sourcing
Sinking / Sourcing
Sinking / Sourcing
Sinking / Sourcing
Ch ap te r 6 Ap pl ie d Instruc ti ons
Input Number
X0.0 ~ X0.3
X0.4 ~ X0.11
X0.0 ~ X0.11
X0.12 ~ X0.15
X0.0 ~ X0.7
No built-in inputs
X0.0 ~ X0.7
X0.8 ~ X0.15
X0.0 ~ X0.7
Maximum Input
Frequency
4M Hz
200K Hz
200K Hz
10K Hz
200K Hz
200K Hz
10K Hz
200K Hz
6 - 2 7 7
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