SmartAXIS Touch User's Manual 1-3
1 About the SmartAXIS
1
General Information for SmartAXIS
1.3 Special Functions for the Touch
This section describes the functions of the Touch.
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I/O Related Functions
■ Catch Input
The catch input allows it to receive short input pulses from sensors without regard to the scan time. A maximum of
four catch inputs can be used.
■ Input Filter
The input filter can be adjusted according to the width of input signals to reject input noises. Selectable input filter
values to pass input signals are 0 millisecond, and 3 through 15 milliseconds in 1 millisecond increments.
■ Interrupt Input
The interrupt input can be used to call an interrupt program to respond to an external input that requires a response
faster than the scan time. A maximum of four interrupt inputs can be used. This can only be used when ladder
program is selected as the programming language for control function.
■ Stop and Reset Inputs
Stop input is a function to stop the ladder program or FBD program operation for the Touch. Reset input is a function
to stop the ladder program or FBD program operation for the Touch and clear the value of control devices. Any input
terminal on the Touch can be designated as a stop or reset input to control the Touch operation.
■ Analog Input
Analog input of 0 to 10V DC or 4 to 20 mA can be converted to a digital value of 0 to 1000. A maximum of two inputs
can be used as analog inputs.
■ Analog Output
Analog output converts a digital value between 0 and 1000 to analog value of 0 to 10V DC or 4 to 20 mA and outputs
it. A maximum of two outputs can be used as analog outputs.
■ Remote I/O
When the number of Touch inputs and outputs is insufficient, the number of inputs and outputs can be expanded to
a maximum of 156 points by connecting the SmartAXIS Pro/Lite as remote I/O slaves. With the remote I/O function,
the analog inputs on the SmartAXIS that are connected as remote I/O slaves can also be used.
■ Expanded Analog I/O
Expanded analog I/O allows the Touch to handle analog inputs for voltage, current, thermocouples, and Resistance
thermometer outputs for voltage and current by using analog cartridges. The Touch can be expanded to a maximum
of four analog inputs and outputs.
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