Functional Comparison - Mitsubishi Electric MELSEC L Series Manual

2
ANALOG INPUT MODULE REPLACEMENT

2.3.2 Functional comparison

Item
Sets whether to enable or disable the A/D conversion for each
A/D conversion enable/ disable
channel. By disabling the conversion for the channels that are
function
not used, the sampling time can be shortened.
Performs the A/D conversion for analog input values
Sampling processing successively for each channel, and outputs digital output values
upon each conversion.
For each channel, averages A/D conversion values by the
Time average
amount of time, and outputs the average value as a digital value.
For each channel, averages A/D conversion values by the
Averaging Count average number of times, and outputs the average value as a digital
processing value.
For each channel, averages A/D conversion values by the
Moving average number of times on a moving of each sampling processing, and
outputs the average value as a digital value.
Range switching function Sets the input range to be used.
Offset/gain setting function Compensates for errors in digital output values.
Conversion speed switch function Sets the conversion speed.
Extends the input range. By combining this function with the
Input range extended mode
input signal error detection function, simple disconnection
function
detection can be executed.
Maximum value/minimum value Stores the maximum and minimum values of the digital output
hold function values in the module.
Input signal error detection
Detects the analog input value which exceeds the setting range.
function
Extends the detection method of the input signal error detection
Input signal error detection function. Use this function to detect the input signal error only in
extension function the lower limit or upper limit, or to execute the disconnection
detection.
Warning output function Outputs an alarm when a digital output value is within the range
(process alarm) set in advance.
Sets the resolution according to the application. The resolution
Resolution mode
mode setting is applicable to all channels.
Scale-converts the output digital value to the set range of the
Scaling function scaling upper limit value and scaling lower limit value. This omits
the programming of the scale conversion.
Adds the set shifting amount of the conversion value to the
scaling value (digital operation value) and stores the value in the
Shift function
buffer memory. Fine adjustment can be performed easily when
the system starts.
Sets the maximum value of the scaling value (digital operation
Digital clipping function value) to 20000 and the minimum value to 0 or -20000 when the
input voltage or current exceeds the input range.
Subtracts the difference conversion reference value from the
Difference conversion function scaling value (digital operation value) and stores the acquired
value in the buffer memory.
Logs the digital output value or scaling value (digital operation
Logging function value). The data of 10000 points can be logged for each
channel.
Performs the A/D conversion of analog input value (voltage or
Flow amount integration function current) from a source such as a flow meter and integrates the
digital output value.
Stores the errors and alarms occurred in the A/D converter
Error log function module to the buffer memory as a history. Up to 16 errors and
alarms can be stored.
Collects the errors and alarms occurred in the A/D converter
Module error collection function
module and stores them in the CPU module.
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Description
*1
: Supported,
A1S68AD L60AD4 Precautions for replacement
The setting range of average
time and count differ.
Refer to the MELSEC-L Analog-
Digital Converter Module User's
Manual, and check the
specifications.
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By setting the same scaling
upper limits and scaling lower
limits as the resolution of
–
A1S68AD, the same digital
output values as A1S68AD can
be used.
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: Not supported