Mitsubishi Electric R16MTCPU Programming Manual page 273

• First I/O No. of the module set by [System Parameter]  [I/O Assignment Setting] in GX Works3 is specified by (S1). (S1)
sets 10H by the system configuration when a FROM instruction is executed in the A/D conversion module (R64AD).
R04CPU R32MTCPU
First First
I/O No. I/O No.
No. : 3E00H No. : 3E10H
• The upper limit for the value that can be set for number of words (n) to be read, and buffer memory start address (D2)
differs depending on the target module. Refer to the manual of module used for details.
• Adjust an executive task, the number of words (n) to be read referring to the operation processing time so that this
instruction may not obstruct the execution of the motion operation because processing time becomes long in argument to
the number of words (n) to be read.
• Refer to the following for intelligent function modules that can be used as the Motion CPU control module.
MELSEC iQ-R Motion controller Programming Manual (Common)
• The combinations for read destination and read source that are set to (S1) and (D) are shown below.
: Combination possible, : Combination not possible
Read source(S1)
User device/System device
CPU start I/O number (3E00H to
3E30H)
Module start I/O number (000H to
FF0H)
*1 Reading data is not reflected but an error does not occur.
Operation error
An operation error will occur if:
• Number of words (n) to be read is outside the range.
• Motion CPU cannot communicate with target module at the instruction execution.
• Abnormalities of the target module were detected at the instruction execution.
• The address specified with (S2) is outside the buffer memory range.
• Start device No. (D) which stores the reading data + number of words (n) to be read is outside the device range.
• (D) is a bit device and the device number is not a multiple of 16.
• (S1) and (D) combination is wrong.
RX40C7 R64AD R64DA
First First First
I/O No. I/O No. I/O No.
No. : 00H No. : 10H No. : 20H
Read destination(D)
User device/
System device


Self CPU

Other CPU

Self CPU
controlled

Other CPU
controlled
CPU buffer CPU buffer
memory access memory access
device device (fixed scan
communication
area)
Self Other Self
CPU CPU CPU
  
  
  
  
  
4 OPERATION CONTROL PROGRAMS
Module access device
Other Self CPU Other
CPU controlled CPU
controlled
*1
  
*1
  
*1
  
*1
  
*1
  
4.19 Other Instructions
4
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