Chapter 8 Functions; Input Response Time Setting Function - Mitsubishi Electric NZ2MFB2-16A User Manual

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.
Function setting switch 1 to 3
1
OFF
OFF
OFF
OFF
ON
ON
ON
ON
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 105 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.
Value of input response time setting
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)
2
OFF
OFF
ON
ON
OFF
OFF
ON
ON
0ms 0.2ms

0.004ms
3
OFF
ON
OFF
ON
OFF
ON
OFF
ON
1.0ms 1.5ms 5ms
0.15ms 0.4ms 2ms
8.1 Input Response Time Setting Function
Input response time setting
10ms (default)
0ms
0.2ms
1ms
1.5ms
5ms
20ms
70ms
10ms 20ms 70ms
4ms 9ms 36ms
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