7. APPLICATION INSTRUCTIONS
7 − 90
MELSEC-A
7.8 Local, Remote I/O Station Access Instructions
Local, remote I/O station access instructions are used to transfer data in a data link
system.
Four instructions are provided as shown below.
The local and remote I/O station access instructions can be used in the sequence
program of the master station only.
Classification Instruction Symbol Ref. Page
Read LRDP 7-91
Local
station
Write LWTP 7-91
Read RFRP 7-97
Remote I/O
station
Write RTOP 7-97
CAUTION
Local, remote I/O station access instructions (LRDP, LWTP, RFRP, RTQP) can be used on
MELSECNET(II) and MELSECNET/B.
They cannot be used on the MELSECNET/10.
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