8 FUNCTIONS
8.1 Input Response Time Setting Function
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8 FUNCTIONS
This chapter describes the details of the functions available in the I/O module, and the setting procedures for those functions.
For details on remote I/O signals and remote registers, refer to the following.
Page 217 Remote I/O Signal
Page 224 Remote Register
8.1 Input Response Time Setting Function
Prevents an incorrect input due to noise by setting the response time required for the module to recognize an actual input as
the X signal.
Setting procedure
Set the input response time using function setting switch 2 to function setting switch 4 of the I/O module.
*1 This is a value set to the I/O module (except for waterproof module) as a factory default.
*2 This is a value set to the I/O module (waterproof module) as a factory default.
The input response time setting is determined by the statuses of function setting switch 2 to function setting switch 4 at power-
on.
If the setting of function setting switch 2 to function setting switch 4 is changed while the I/O module is powered on, one of the
errors from Function setting switch 2 changed error (error code: 0202H) to Function setting switch 4 changed error (error
code: 0204H) occurs, and the changed setting of the input response time is not applied.
The setting status of the input response time can be checked by Input response setting status (RWr2.b0 to RWr2.b2). For
details, refer to the following.
Page 233 Input response setting status (RWr2.b0 to RWr2.b2)
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 2 to function setting switch 4 Input response time setting
Function setting switch 2 Function setting switch 3 Function setting switch 4
Off Off Off 1ms
*1
Off Off On 0ms
Off On Off 0.2ms
Off On On 1.5ms
On Off Off 5ms
On Off On 10ms
*2
On On Off 20ms
On On On 70ms
Value of input response time setting 0ms 0.2ms 1ms 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)
0.003ms 0.12ms 0.3ms 2ms 4ms 9ms 36ms
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