Appendix 2.1 Rird Instruction - Mitsubishi MELSEC Q Series User Manual

APPENDIX

Appendix 2.1 RIRD instruction

Internal device
Set data
(System, user)
Bit
(S) —
(D1) —
(D2)
[Instruction [Execution
symbol] condition]
RIRD
RIRD
Device
Un Start I/O number of the module
(S) Start number of the device in which control data is stored.
(D1) Start number of the device to which read data is to be stored.
Device that is turned ON for one scan upon completion of
(D2) reading.
(D2) + 1 also turns ON at an abnormal completion.
The file register of each of the local device and the program cannot be used as a device for setting data.
Device Item
(S) + 0 Completion status
(S) + 1 Station number
Access code
(S) + 2
Attribute code
Buffer memory
(S) + 3 address or device
number
Number of points
(S) + 4
to read
App - 3
The RIRD instruction reads the data for the specified points from the buffer memory or
the PLC CPU device of the specified station.
MELSECNET/H
File
register
Word Bit
Command
Command
Description
Stores the status when the instruction is complete.
0 : No error (normal completion)
Other than 0: Error code
Specify the station numbers of the local station and intelligent
device station.
b15
Access code
Specify the buffer memory start address or device start
number.
Specify the read data count (in word units).
Usable devices
Special
Direct J \ function
module
Word
U \G
—
—
—
G.RIRD
GP.RIRD
Set data
Within the range of the
specified device
Within the range of the
specified device
Within the range of the
specified device
Control data
Set data
b8 b7
Attribute code
Index
Constant
register
Z
K, H
—
—
—
Un (S) (D1)
Un (S) (D1)
Setting range
0 to FE
H
Setting range
0 to 64
b0
See (1) and (2).
1 to 480
1 to 32
MELSEC-Q
Other
S
— —
— —
— —
(D2)
(D2)
Data type
Binary 16 bits
Device name
Bit
Set by
— System
User
User
1
User
2
User
3
App - 3