Mitsubishi Electric MELSEC iQ-R Series - Page 1660

1658
19 CC-LINK INSTRUCTIONS
19.5 Reading Data from the Automatic Update Buffer
■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]