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CHAPTER 3
This function uses the built-in external input signals (16 points) as general-purpose inputs to read the on/off status of
external devices such as switches and sensors. The on/off status of the external input signals are refreshed to the
input device (X0 to XF) and used in programs.
(1) Parameter setting
Set the input signals and input response time values.
Project window [Parameter] [PLC Parameter] "Built-in I/O Function Setting" tab
Select "General-purpose input".
(2) External input signal types
The following two types are available.
• High-speed input: X0 to X5 (6 points)
• Standard input: X6 to XF (10 points)
(3) Read timing of external input signals
The on/off status of the external input signals are refreshed to the input device (X0 to XF) at execution of the END
instruction. Therefore, a delay for one scan (maximum) occurs from when an external input signal changes until
when the input device turns on.
(4) Direct input
By using the direct input device (DX0 to DXF) for the external input signals, the external input status can be
loaded at execution of sequence instructions using the direct input device.
GENERAL-PURPOSE INPUT
FUNCTION
Select a response time.
CHAPTER 3 GENERAL-PURPOSE INPUT FUNCTION
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