Stopping/Restarting The Cyclic Transmission And Stopping Link Refreshing (Network Test) - Mitsubishi Electric QJ71LP21 Reference Manual

7 APPLICATION FUNCTIONS

7.9 Stopping/Restarting the Cyclic Transmission and Stopping Link Refreshing (Network Test)

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The remote I/O network can use the "network test" of the GX Developer to stop and
restart cyclic data.
This function is useful when other station's data should not be received or when the
host's data should not be sent at system startup (when debugging), etc.
CPU
B
Station No. 1 2) Link refresh
Station No. 2 2) Link refresh
Station No. 3 2) Link refresh
For details about routing, refer to the Q-corresponding MELSECNET/H network
system reference manual (PLC to PLC network).
1) Stopping/restarting the cyclic transmission stops or restarts the data
receiving (link scan) between the network modules of the applicable
station. However, the data receiving (link refresh) between the PLC
CPU and network modules cannot be stopped or restarted by this
processing.
2) Execution using GX Developer
Through the network test, link startup, link stop and forced link startup
can be performed using GX Developer. For details on the network
testing methods, see the GX Developer Operating Manual.
Master module
LB
Station No. 1
1) Link scan
Station No. 2 1) Link scan
Station No. 3 1) Link scan
MELSEC-Q
Remote I/O station
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