Appendix 13Data Sampling Method For Cpu Modules That Cannot Be Accessed Directly - Mitsubishi Electric MELSEC iQ-R Series User Manual

Appendix 13
This section explains the method for collecting data from CPU modules that cannot be accessed directly (hereafter, explained
with the motion CPU).
Performing refresh by using CPU buffer in a multiple CPU system
By performing refresh between an RCPU and motion CPU in a multiple CPU system, device data in the motion CPU can be
read to the RCPU.
By registering the device values read to RCPU in the data logging target device, data in the motion CPU can be logged.
Settings required for auto refresh
Set the number of points to be sent by each CPU module and a device to store data in "Refresh Setting between Multiple
CPUs" of an engineering tool.
[Parameter]  (CPU module)  [CPU Parameter]  [Refresh Setting between Multiple CPUs] on the Navigation
window
For refresh settings, refer to the following:
MELSEC iQ-R CPU Module User's Manual (Application)
Acquisition example of device data in a motion CPU
■System configuration
RCPU
(No. 1)
■Refresh settings for an RCPU (CPU No.1)
Set a device on an RCPU to store data in the CPU buffer memory and the number of send points in "Refresh Setting (At the
END)" of the RCPU.
Ex.
CPU buffer memory  D256 to D511 (256 points) of an RCPU
APPX
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Appendix 13 Data Sampling Method for CPU Modules that cannot be Accessed Directly
Data Sampling Method for CPU Modules
that cannot be Accessed Directly
High speed data logger
module
Motion CPU (No. 2)