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MELSEC-Q
7 FUNCTION
7.7 Selecting the Response Speed of the Q Series Module (I/O Response Time)
7.7.1 Selecting the response time of the input module
(1) Selecting the response time of the input module
The input response time of a Q Series input module can be set to a desired
response time: 1 ms, 5 ms, 10 ms, 20 ms or 70 ms. The input module reads
external inputs at the specified response time. The default value of an input
response time is 10 ms.
OFF
OFF
ON
ON
Input response time
External input
Input module
(2) Setting the Input Response Time
At the "I/O Assignment" tab screen in the “(PLC) Parameter" dialog box, specify
the desired input response time. Select "Input" in the "Type" column of a slot for
which to specify the desired input response time.
Select "Input". Select "Detailed setting". Select "I/O response time".
(3) Reactions
(a) Higher input response time may result in response to inputs being
influenced by noise. Set the desired input response time by taking into
consideration the operating environment of an input module in use.
(b) No change can be made to the input response time of an AnS Series
corresponding input module. An input response time setting is not made for
a slot of an AnS Series corresponding input module.
(c) The input response speed setting is valid in the following cases.
• After the PLC is turned on
• When the High Performance model QCPU is reset
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