Data Format - Mitsubishi Electric MELSEC iQ-R User Manual

■Data format

The string that represents the data size of a buffer memory area is given. Each data format is as follows:
Data format
u
w
d
■Label name
The label identifier unique to a module is given.
■_D
This string indicates that the module label is for the direct access. A module label without the string is for the auto refresh. The
following table shows the differences between the auto refresh and direct access.
Type Description
Auto refresh Values that are read from or written to the module label are
reflected in the module collectively at the auto refresh. The run
time of the program can be reduced. To use the auto refresh, set
"Target" to "Module Label" in "Refresh settings" of "Module
Parameter".
Direct access Values that are read from or written to the module label are
reflected in the module instantly. Compared with the auto refresh,
the run time of the program becomes longer. However, the
responsiveness is high.
Description
Word [Unsigned]/Bit string [16-bit]
Word [Signed]
Double word [Signed]
Access timing
At auto refresh
At reading/writing from/to the
module label
Example
R60ADH_1.stnMonitor[0].wD
igitalOutputValue
R60ADH_1.stnMonitor_D[0].
wDigitalOutputValue_D
APPX
167
Appendix 1 Module Label
A