Mitsubishi Electric MELSEC iQ-R Series, Руководство по программированию

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19 CC-LINK INSTRUCTIONS
19.5 Reading Data from the Automatic Update Buffer
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Applicable devices
*1 Index modification is not available.
*2 FX and FY cannot be used.
*3 FD cannot be used.
Processing details
• Data is read from the automatic update or random access buffer of the master station.
• The instruction can be executed, from the master station, for an intelligent device station that performs communication with
an automatic update buffer (e.g. AJ65BT-R2N).
• The following figure shows how the G(P).RIFR instruction operates during execution.
Precautions
• Assignment of the automatic update buffer can be achieved by CC-Link configuration setting of the module parameters.
Operation error
Operand Bit Word Double word Indirect
specification
Constant Others
(U)
X, Y, M, L,
SM, F, B, SB,
FX, FY J  \  T, ST, C, D, W,
SD, SW, FD, R,
ZR, RD U  \G  , J  \  ,
U3E  \(H)G 
Z LT, LST,
LC LZ K, H E $
(U)
*1
           
(s1)

*2
 
*3
        
(s2) 
*2
 
*3
        
(d)   
*3
        
(n)

*2
 
*3
        

Data is read from the automatic update or random access buffer specified by (s1) and (s2) that is in the master station.

The read data is stored in the device specified by (d) and later.
Error code
(SD0) Description
4000H to 4FFFH

MELSEC iQ-R CPU Module User's Manual (Application)
G(P).RIFR
(s1)
(d)
(s2)
Ó
Ò
CPU module
CC-Link intelligent device station
Communications start
when conditions are met.
CC-Link master station
Random access buffer
Buffer memory
Automatic update
buffer memory
Automatic update buffer
[Own station] [Target station]