90
8 FUNCTIONS
8.1 Input Response Time Setting Function
8 FUNCTIONS
This chapter describes the details of the functions available in the I/O module, and the setting method for those functions.
8.1 Input Response Time Setting Function
This function prevents an incorrect input due to noise by setting the response time until the module recognizes an actual input
as the X signal.
Setting method
1. Set the input response time using the function setting switch 1 to 3 of I/O module.
The setting status of input response time can be checked by bit0 to bit2 of detailed module information (upper).
For details, refer to the following.
Page 129 Detailed module information (upper)
Precautions
Noise may be taken in as an input depending on the input response time setting.
The pulse width which is taken in as an input varies depending on the input response time.
To set the input response time, consider fully the operating environment.
The following table shows the minimum values of the pulse widths which may be taken in as an input. The pulse widths lower
than the values shown below can be filtered as noise.
Function setting switch 1 to 3 Input response time setting
1 2 3
OFF OFF OFF 10ms (default)
OFF OFF ON 0ms
OFF ON OFF 0.2ms
OFFONON1ms
ON OFF OFF 1.5ms
ON OFF ON 5ms
ON ON OFF 20ms
ON ON ON 70ms
Value of input response time setting 0ms 0.2ms 1.0ms 1.5ms 5ms 10ms 20ms 70ms
The minimum value of the pulse width which may be
taken in as an input (the maximum pulse widths which
can be filtered as noise)
0.004ms 0.15ms 0.4ms 2ms 4ms 9ms 36ms
To Next Page
Loading...
