Refresh Parameters - Mitsubishi Electric Melsec QJ71LP21 Reference Manual

5 PARAMETER SETTINGS

5.7 Refresh Parameters

Not
allowed
Duplicate
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The refresh parameters are used to transfer the link device data (LB, LW, LX, LY) of
the network module to the devices (X, Y, M, L, T, B, C, ST, D, W, R, ZR) of the CPU
module for operation of the sequence programs.
By eliminating the network refresh of those link devices that are not used by the
sequence programs, the scan time can also be reduced.
Because it is not necessary to transfer the link devices to different devices with the
sequence programs, the number of program steps is reduced and easy-to-understand
programs can be created.
[Refresh parameter setting screen]
1)
3)
4)
The assignment status of the above refresh parameters can be checked with the
assignment image diagram.
The assignment image diagram shows the device assignments made between the
CPU module and the modules set for the No. of module setting.
The refresh parameters cannot be duplicated in the CPU's device settings.
CPU
B0
to
B5FF
B9FF
B1FFF
6)
5)
Network module No. 1
LB0
LB5FF
LB3FFF
MELSEC-Q
2)
Network module No. 2
LB0
to
to
LB9FF
LB3FFF
5 - 25