Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 1778

■Applicable devices
Operand Bit
X, Y, M, L,
SM, F, B, SB,
FX, FY

(U) GP.PFWRT

ZP.PFWRT

(s)
*1

(d)
*1 FX and FY cannot be used.
*2 T, ST, C, and FD cannot be used.
*3 FD cannot be used.
■Control data
Operand: (s)
Device Item
+0 System area
+1 Completion status
Processing details
• These instructions write the module extension parameters in the buffer memory to the module extension parameter file. For
details, refer to the following.
 MELSEC iQ-R Positioning Module User's Manual (Application)
• The execution of the PFWRT instruction and whether it has been completed normally or with an error can be checked with
the completion device (d) or completion status indication device (d)+1.
• Completion device (d)
This device turns on during the END processing of the scan where the PFWRT instruction completed, and turns off during the next END processing.
• Completion status indication device (d)+1
This device turns on or off depending on the completion status of the PFWRT instruction.
When completed normally: Unchanged from off.
When completed with an error: Turns on during the END processing of the scan where the PFWRT instruction completed, and turns off during the next END
processing (the same on/off operation as the completion device is performed).
• The following figure shows the operation at completion of the PFWRT instruction.
Sequence scan
PFWRT instruction
Completion device (d)
Completion status
indication device (d)+1
22 POSITIONING INSTRUCTIONS
1776
22.4 Backing up Module Data (Writing Data to the Flash ROM)
Word
J\ T, ST, C, D,
W, SD, SW,
FD, R, ZR,
RD
 
 
*3
 
*2
 
Description

The instruction completion status is stored.
0 END 0
Execution of
the instruction
OFF
OFF
U\G, J\, Z LT, LST,
U3E\(H)G
  
  
  
  
• 0: Completed successfully
• Other than 0: Completed with an error (error code)
END 0
Double word Indirect
specification
LZ
LC
 
 
 
 
Setting range


END 0 END
Completion of the instruction
ON
Completed with an error
ON
Completed
successfully
1 scan
Constant Others
(U)
K, H E $
   
   
   
   
Set by

System
0 END
OFF
OFF