Procedure To Execute The Built-In Analog Function - Mitsubishi Electric MELSEC iQ-F FX5 User Manual
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2.
Set the warning output upper limit value and warning output lower limit value.
Warning output upper limit value and warning output lower limit value can be set for each channel using the warning output
function.
Name
Warning output upper limit value
Warning output lower limit value
3.
Enable the warning output setting.
Operation
The judgment to output a warning is based on the value resulting after shift processing is performed on the digital input value.
The warning output upper limit value flag turns ON for the appropriate channel when the input digital value exceeds the
warning output upper limit value, and the warning output lower limit value flag turns ON when the input digital value is less
than the warning output lower limit value.
Details of the warning output upper limit value flag are shown in the table below.
Name
Warning output upper limit value flag
Details of the warning output lower limit value flag are shown in the table below.
Name
Warning output lower limit value flag
The set warning output upper and lower limit values are used as the digital values for D/A conversion when there is a warning.
After a warning occurs and the digital value becomes less than the warning output upper limit value or larger than the warning
output lower limit value, the analog output value returns to the normal value, but the warning output flag is not cleared.
The following describes the procedure to clear the warning output.
After setting the digital value to less than the warning output upper limit value or larger than the warning output lower limit
value, turn the alarm clear request ON.
Precautions
• When using the scaling function and the shift function, the digital value resulting after scaling and adding the shift is
detected for warning. Make sure to set the warning output upper limit and lower limit values with regard to scaling and shift
additions.
• A warning will be output when the digital value exceeds the warning output upper limit value or when it is less than the
warning output lower limit value.
4.5
Procedure to Execute the Built-in Analog Function
The procedure to execute the built-in analog function is described below.
1.
Confirm the specifications of the built-in analog function.
Confirm the specifications of the built-in analog function. (Page 143 Specifications)
2.
Connect the CPU module to the external device.
Wiring to external devices. (Page 161 Wiring)
3.
Set the parameters.
Set the parameters to configure the built-in analog function. (Page 164 Parameter Setting)
4.
Create the program.
Create the program to use the built-in analog function.
5.
Run the program.
4 FX5U CPU MODULE BUILT-IN ANALOG
160
4.5 Procedure to Execute the Built-in Analog Function
Allowable setting range
-32768 to +32767
(upper limit value > lower limit value)
Allowable setting range
0: Normal
1: Upper limit alarm ON
Allowable setting range
0: Normal
1: Lower limit alarm ON
Default value
0
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