Mitsubishi Electric MELSEC iQ-R Series User Manual page 349

Setting the data communication with fixed scan communication area
This section describes the setting for making the data communication with fixed scan communication area.
■Setting whether or not it should be used
To communicate data with the fixed scan communication area, "Enable" must be set to "Fixed Scan Communication
Function".
[System Parameter]  [Multiple CPU Setting]  [Communication Setting between CPUs]  [Fixed Scan
Communication Function]
Window
Displayed items
Item Description
Fixed Scan Communication Specify whether or not the fixed scan communication function
Function should be used.
■Setting fixed scan communication area
This menu item sets up the range of send area for each CPU in the fixed scan communication area (the refresh area and the
total of areas used for direct access communication). Only the fixed scan communication area can be changed with the
parameter settings. The other areas are not configurable.
[System Parameter]  [Multiple CPU Setting]  [Communication Setting between CPUs]  [Fixed Scan
Communication Area Setting]
Window
Displayed items
Item
Total [K Word]
PLC No.1 [Start XY: U3E0]
PLC No.2 [Start XY: U3E1]
PLC No.3 [Start XY: U3E2]
PLC No.4 [Start XY: U3E3]
*1 The max area size that can be set through setting of the fixed scan communication area differs depending on the fixed scan
communication cycle.
Fixed scan communication cycle
0.10ms
0.15ms
Except for shown above
Description
View the total value.
Set the send area size for CPU No.1.
Set the send area size for CPU No.2.
Set the send area size for CPU No.3.
Set the send area size for CPU No.4.
Setting range
• Not Use
• Use
Setting range
Entire system: 0 to 24K words
0 to 12K words
0 to 12K words
0 to 12K words
0 to 12K words
Max area size that can be set through setting of the fixed scan
communication area
12K points
20K points
24K points
23 MULTIPLE CPU SYSTEM FUNCTION
23.4 Data Communication Between CPU Modules
Default
Not Use
Default
*1

0K word
0K word
0K word
0K word
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