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4 ABOUT QD51 (-R24) FUNCTIONS
4.5.4 Reading and writing data from/to the programmable controller CPU's expansion file
register
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Data can be written to and read from the programmable controller CPU's expansion file
register (file registers after block No. 1) directly by a QD51 (-R24) BASIC program.
Refer to Section 4.5.3 concerning writing of data to and reading data from a file register
(block No. 0).
POINT
The QD51 (-R24) can read or write the expansion file register data only when
accessing an A series programmable controller via network.
A CPU
Memory Cassette
Sequence
program
File register
(Block No. 0)
Expansion
file register
[Commands and functions used]
Commands and functions used to write data to and read data from the programmable
controller CPU's expansion file register are shown below.
Command, Function Name
PCRD
PCWT
Reading of data
Writing of data
Processing Contents
:
Reads data from the programmable controller CPU.
:
Writes data to the programmable controller CPU.
MELSEC-Q
QD51(-R24)
BASIC
program
4 - 20
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