Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 1660

■Applicable devices
Operand Bit
X, Y, M, L,
SM, F, B, SB,
FX, FY
*1
(U) 
*2

(s1)
*2
(s2) 

(d)
*2

(n)
*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.
[Own station]
CPU module
(s1)
(s2)
(d)
 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.
Precautions
• Assignment of the automatic update buffer can be achieved by CC-Link configuration setting of the module parameters.
Operation error
Error code Description
(SD0)
 MELSEC iQ-R CPU Module User's Manual (Application)
4000H to 4FFFH
19 CC-LINK INSTRUCTIONS
1658
19.5 Reading Data from the Automatic Update Buffer
Word
J\ T, ST, C, D, W,
SD, SW, FD, R,
ZR, RD
 
*3
 
*3
 
*3
 
*3
 
CC-Link master station
G(P).RIFR
Automatic update buffer
Ò
Random access buffer
Ó
Double word Indirect
U\G, J\, Z LT, LST,
U3E\(H)G LC
  
  
  
  
  
Communications start
when conditions are met.
Constant
specification
LZ K, H E
  
  
  
  
  
[Target station]
CC-Link intelligent device station
Buffer memory
Automatic update
buffer memory
Others
(U)
$
  
  
  
  
  