Mitsubishi Electric MELSEC iQ-F FX5 Programming Manual page 468

Operation error
Error code Description
(SD0/SD8067)
2820H In the corresponding device range of the device specified by (s1) and later, "00H" does not exist.
3405H The value stored in a device specified in (s2)+1 is -2 or lower.
The value stored in a device specified in (s2) exceeds the number of characters of (s1).
A negative value is specified in (s2).
The value stored in a device specified in (s2)+1 exceeds the number of characters of (s1).
The character string specified by (s1) has more than 16383 characters.
The total of the values stored in devices specified in (s2) and (s2)+1 exceeds the number of characters of (s1).
3406H The number of characters from the position specified by (d) to (s2)+1 exceeds the corresponding device range.
8 APPLICATION INSTRUCTION
466
8.8 Character String Operation Instruction