Mitsubishi Electric MELSEC-Q Series User Manual page 178

(a) Control data
Device Item
(S) + 0 Completion status
(S) + 1 Station number
Access code
(S) + 2
Attribute code
Buffer memory address
(S) + 3
or device number
(S) + 4 Number of read points
*1 For details, refer to the manual for the local station or the intelligent device station from which data are read.
When specifying the random access buffer, specify the start address of the random access buffer as 0.
*2 The value indicates the maximum number of read data.
Specify the value within the buffer memory capacity of the local station or the intelligent device station, or within the
receive buffer area setting range set by a parameter.
*3 To read device data from the CPU module of the target station other than the QCPU (Q mode), QCPU (A mode), LCPU,
QnACPU or AnUCPU, the setting range must be 1 to 32 words.
(b) Access code and attribute code (When accessing to the buffer memory in the CC-
Link)
Buffer in the intelligent device station
Buffers in a master station and a local station
176
Stores the status when the instruction is complete.
0: No error (normal completion)
Value other than 0: Error code
Specify the station numbers of the master station, local station,
and intelligent device station.
Specify the type of the device to be accessed or the type of the
buffer memory.
b15 to
Access code
Specify the start address of the buffer memory or the start number
of the device.
Specify the number of read data (in word units).
Buffer memory contents
Random access buffer
Remote input
Remote output
Remote register
Link special relay
Link special register
Setting data
b8 b7 to b0
Attribute code
Setting
Set by
range

System
0 to 64 User
Refer to
User
(b) and (C).
*1 User
*2
1 to 480
User
*3
1 to 32
Attribute
Access code
code
00
H
20
H
21
H
22 04
H H
24
H
63
H
64
H