Mitsubishi MELSEC Q Series Programming Manual page 534

FROM(P),DFRO(P)
DFRO
(1) Reads the data in (n3
the intelligent function module designated by n1, and stores the data into the area starting
from the device designated by
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.
• There has been no exchange of signals with an intelligent function module at the
execution of the instruction.
• An error has been detected in an intelligent function module at the execution of the
instruction.
• The I/O number designated by n1 is not for the intelligent function module.
• The range of n3 points (2
exceeds the designated device range.
• The address designated by n2 is outside the buffer memory range.
7-160
2) words from the buffer memory address designated by n2 of the
Intelligent function module
buffer memory
n2
n2+1
(n3 2) words
Data read from intelligent function modules is also possible with the use of an
intelligent function module device.
For the intelligent function module device, refer to the QnUCPU User's Manual
(Function Explanation, Program Fundamentals) or Qn(H)/QnPH/QnPRHCPU
User's Manual (Function Explanation, Program Fundamentals).
n3 points for DFRO) from the device designated by
.
D
CPU module
Device designated
by D
(n3 2) points
(Error code: 1412)
(Error code: 1402)
(Error code: 2110)
D
(Error code: 4101)
(Error code: 4101)