Mitsubishi Q00JCPU User Manual page 186

3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS
Basic Process Redundant
Note3.39 Note3.39
Note3.39
Universal
UD
Note3.39
Note38
Basic
Process Redundant
Note3.39 Note3.39 Note3.39
Universal
UD
Note3.39
3
- 88 3.9 Numeric Values which can be Used in Sequence Programs
3.9.4 Real numbers (Floating-point data)
(c) Method and precautions for internal operation processing with double
Note3.39
precision Note38
The High Performance model QCPU permits selection of "Perform internal
operation processing with double precision" or "Do not perform internal operation
processing with double precision".
1) Settings for internal operation processing with double precision
Make settings in the floating-point operation processing in the PLC system of
the PLC parameter dialog box (Default: Perform internal operation processing
with double precision).
To turn off
"Perform internal
arithmetic
operations in
double precision",
uncheck the
check box.
2) Operation result
The operation result is single precision regardless of the floating-point
operation processing setting.
In the internal operation processing with double precision, internal operation
only is performed with double precision (64 bits).
The internal operation processing with double precision is not available for the Basic model
QCPU, Process CPU, Redundant CPU and Universal model QCPU.
It is available only for the High Performance model QCPU.
Figure 3.71 PLC system screen