Mitsubishi Electric MELSEC iQ-R Series - Page 597

7 APPLICATION INSTRUCTIONS
7.6 Reading/Writing Data Instructions
595
7
Processing details
• These instructions read device data by the number of points specified by (n) from the read offset specified by (s) in the
device data storage file in data memory, and store it in the device specified by (d). (s) indicates the offset from the start of
the device data storage file and can be specified by word offsets (incremented by 1 every 16 bits).
• When the S(P).DEVLD instruction is used, a device data storage file must be set up in advance. (Page 593 Setting
method)
• Use the SP.DEVST instruction to write device data to the device data storage file. ( Page 596 SP.DEVST)
Operation error
Error code
(SD0)
Description
2840H The device data storage file is not set in parameter.
3405H The value specified by (n) is 0.
+0
+1
+2
(d)
(n)
(s)
Data memory
Device data storage file
Read offset of the device data
storage file
Read offset
16 bits