Mitsubishi Electric R16MTCPU - Page 273

4 OPERATION CONTROL PROGRAMS
4.19 Other Instructions
271
4
• 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).
• 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
*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.
Read source(S1) Read destination(D)
User device/
System device
CPU buffer
memory access
device
CPU buffer
memory access
device (fixed scan
communication
area)
Module access device
Self
CPU
Other
CPU
Self
CPU
Other
CPU
Self CPU
controlled
Other
CPU
controlled
User device/System device  
*1

CPU start I/O number (3E00H to
3E30H)
Self CPU  
*1

Other CPU  
*1

Module start I/O number (000H to
FF0H)
Self CPU
controlled
 
*1

Other CPU
controlled
 
*1

Power supply
module
R04CPU R32MTCPU RX40C7 R64AD
No. : 20HNo. : 10HNo. : 00HNo. : 3E10H
First
I/O No.
No. : 3E00H
R64DA
First
I/O No.
First
I/O No.
First
I/O No.
First
I/O No.