Mitsubishi Electric MELSEC iQ-R16MTCPU Programming Manual page 38

Multiple CPU refresh setting (Q compatibility high-speed refresh setting)
With self Motion CPUs, data between Motion CPU internal devices and the CPU buffer memory is updated every operation
cycle in the settings of devices for which refresh (at END) is set.
[R Series Common Parameter]  [System Parameter]  [Multiple CPU Setting]  "Fixed Scan Communication Area
Setting"  "Refresh (END) Setting"  "Detailed Setting"  "Q Compatibility High-speed Refresh Setting"
Window
Displayed items
Classification Item
Display Setting
No.
CPU
User setting Device
setting
Points
Refresh
cycle
*1 Point in word unit.
1 MULTIPLE CPU SYSTEM
36
1.3 Data Communication Between CPU Modules in the Multiple CPU System
Description
Setting No. which executes high speed refresh is
displayed.
CPU No. set in the refresh (END) setting is
automatically displayed by setting devices.
• Self CPU
Refresh from the internal device of Motion CPU
to CPU buffer memory.
• Other CPU
Refresh from the CPU buffer memory to
internal device of Motion CPU.
Set the device No. of Motion CPU to execute the
high speed refreshes.
Set the number of points to refresh data of each
data in word unit.
*: Refresh is not executed when not set.
Operation cycle (fixed)
Setting/display Restriction
value
1 to 128
(Up to 128)
CPU No. 1 to No.4
Usable device: • The start device number must be a multiple of
D, W, #, M, X, Y, B 16 for the bit device.
• Cannot set a device not set also in the refresh
(END) setting.
• No. of "start device+number of points" cannot
exceed setting range of each setting No. in
refresh (END) setting.
• Cannot overlap the device No. between
setting No..
Range: 2 to 256[points] Sets the total of all CPUs to 256 points or lower.
Unit: 2 points
*1
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