Transmission Required Time
9-1
9. Transmission Required Time
9.1 Double check
AnyWireASLINK does not update input area data unless it receives the same data consecutively twice
(double check). For data update, therefore, it needs a transmission cycle time of one cycle at least and of
two cycles at maximum.
[Cautions in handling an input signal]
If the signal transmission time is shorter than two cycles, the signal may not be recognized depending on the
input timing. Therefore,
signal input should be longer than a two-cycle time to obtain secure response
time
.
* Data is updated on a 16-bit basis between this device and the higher-order controller. With
double-checking performed on a 1-bit basis, however, data cannot be guaranteed on a 16-bit basis in a
strict sense.
[Cautions in handling an output signal]
Data is double-checked within the output slave unit, too. For this reason, a transmission delay time of one to
two cycles is needed to receive the output from the controller and to reflect that output.
Therefore,
hold the output signal from the controller for at least two cycles
.
1-cycle time
2-cycle time
Sampling timing
Case in which the
data response time
is minimum
Change in input data
Input data update
Input data update
Case in which the
data response time
is maximum
Change in input data
Sampling timing
Sampling timing
Sampling timing
Sampling timing
