Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 177

5 PARAMETER SETTINGS
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Using the assignment image diagram, assignment errors and duplicate settings
between the modules can also be checked.
It is a convenient tool to view the assignment status when setting or changing the
network refresh parameters.
It also displays the interlink transmission parameters; thus, complicated settings
among the network modules can be verified.
Assignment image
[Link refresh assignment image]
POINT
(1) The assignment image diagram can display schematic images of CC-Link
IE Controller Network, CC-Link IE Field Network and MELSECNET/H
(network modules on controller networks, PLC to PLC networks, and remote
I/O networks).
(2) Avoid any duplicate settings of the programmable-controller-side devices
that are used for the following.
• Auto refresh parameters of CC-Link modules
• Refresh parameters of network modules
• I/O numbers used for I/O modules and intelligent function module
• Auto refresh parameters of intelligent function modules
• Auto refresh using the CPU shared memory in the multiple CPU system
(3) Do not set the link refresh range that does not exceed the range of the
internal user devices to the extended data register(D) or to extended link
register(W) respectively.
1) Assignment method
Select the device range input method from either Points/Start or
Start/End.
• Default: Start/End
2) Transient transmission error history status
Select whether to overwrite or retain the error history.
• Default: Overwrite
3) Transfer settings on the Link side and the PLC side
Select the device names from the following:
Link side : LX, LY, LB. LW
PLC side : X, Y, M, L, T, B, C, ST, D, W, R, ZR
However, if the link side is LX, any of C, T and ST cannot be selected
on the CPU side.
Set the values for Points/Start/End in 16-point units.
MELSEC-Q
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