427
FROM, FROMP, DFRO, DFROP
1
2
3
4
4
6
7
8
7.8
B
uffer
memor
y ac
cess
instr
uction
7.8.1
F
ROM, F
R
OMP,
DFRO, DF
ROP
Operation Error
(1) In any of the following cases, an operation error occurs, the error flag (SM0) turns ON, and an error code is stored into
SD0.
Program Example
(1) The following program reads CH1 digital output value of the Q68ADV at I/O numbers 040 to 04F to D0 when X0 is turned
on (reads data by one word from the buffer memory address 11).
[Ladder Mode]
[List Mode]
(2) The following program reads the current feed value of axis 1 of the QD75P4 at I/O numbers 040 to 05F to D0 and D1
when X0 is turned on (reads data by two words from the buffer memory address 800).
[Ladder Mode]
[List Mode]
Error
code
Error details
Q00J/
Q00/
Q01
QnH
QnPH QnPRH
QnU
LCPU
1402
An error has been detected in an intelligent function module at the
execution of the instruction.
1412
There has been no exchange of signals with an intelligent function
module at the execution of the instruction.
2110
The I/O number specified in n1 is not for the intelligent function module.
4101
The range of n3 points (2 n3 points for the DFRO) from the device
specified in exceeds the specified device range.
The address specified in n2 is outside the buffer memory range.
D
Step
Instruction
Device
Step
Instruction
Device