Low-Speed Cyclic Transmission Function (High Performance Model Qcpu, Process Cpu, Redundant Cpu, And Universal Model Qcpu) - Mitsubishi Electric Melsec QJ71LP21 Reference Manual

7 APPLICATION FUNCTIONS
7.3 Low-Speed Cyclic Transmission Function (High Performance model QCPU, Process
CPU, Redundant CPU, and Universal model QCPU)
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The low-speed cyclic transmission function is convenient when sending data that does
not require high-speed transfer to other stations in a batch mode using the link devices
(LB/LW).
The performance of the low-speed cyclic transmission function is almost the same as
that of the transient transmission function.
For details of the performance, refer to Section 7.4.
A station can transmit data only once in a single link scan. To send data from multiple
stations concurrently, the link scan time must be longer than the total transmission time
for all the sending stations.
In the low-speed cyclic transmission, send range for each station is set with the
common parameters of the control station.
Low-speed cyclic send range for each station
The sending to other stations can be activated by three methods: 1) Transmit data of
one station in 1 scan (default), 2) Fixed term cycle interval setting, and 3) System times.
These methods can be specified through by the supplementary settings, and only one
of them can be selected.
The screen shown below is the supplemental screen where the activation method can
be selected.
POINT
The Basic model QCPU, Q00UJCPU, Q00UCPU, Q01UCPU, and safety CPU
does not support the low-speed cyclic transmission function.
MELSEC-Q
1)
2)
3)
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