Mitsubishi Electric MELSEC iQ-R Series User Manual page 279

Numerical value range for each output type
This section describes the numerical value ranges that can be output for each output type.
■Integer type
The following table lists the numerical value ranges that can be expressed for each integer type.
Output format
Word (unsigned)
Word (signed)
Double word (unsigned)
Double word (signed)
■Real number type
The following table lists the numerical value ranges that can be expressed for each real number type.
Output Negative value
format
Lower limit
Single-precision -3.4028235E+38
real number
Double- -1.79769313486231570E+308
precision real
number
When the value of the data exceeds the numerical value range, the following rule is applied to the output.
• When the value exceeds the upper limit of the positive value, +Inf is output.
• When the value falls below the lower limit of the negative value, -Inf is output.
• When the value is between the upper limit of the negative value and the lower limit of the positive value, 0 is output.
Output format
Single-precision real number
Double-precision real number
Lower limit
0
-32768
0
-2147483648
Upper limit
-1.401298E-45
-4.94065645841246544E-324
-Inf
0xff800000
0xfff0000000000000
Upper limit
65535
32767
4294967295
2147483647
Positive value
Lower limit
1.401298E-45
4.94065645841246544E-324
0
0x00000000
0x0000000000000000
20 DATA LOGGING FUNCTION
Upper limit
3.4028235E+38
1.79769313486231570E+308
+Inf
0x7f800000
0x7ff0000000000000
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20.6 Data Logging File
20