Mitsubishi Electric MELSEC iQ-R04ENCPU, User Manual

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APPX
Appendix 8 Differences in Cyclic Transmission Modes
379
A
Appendix 8
Differences in Cyclic Transmission
Modes
This section describes the differences in "Communication Mode" for the master/local module. Refer to the information of each
mode to select "Communication Mode".
Differences in performance specifications
Differences in link scan time
The following table lists the link scan times for each communication mode when each station is assigned 128 points in "RX/RY
Setting" and 64 points in "RWw/RWr Setting" in "Network Configuration Settings" of "Basic Settings", and when the number of
connected stations increases.
*1 When the total number of stations in the network is eight or less, the performance is equivalent to the one when "High-Speed" is
selected.
Item Normal High-speed High-speed remote net
Maximum number of RWw send points per master
operating station and submaster operating station
(when using the submaster function) 1024 points, 2048 bytes 256 points, 512 bytes 0 point (The submaster station
and local station cannot be
connected.)
Maximum number of RWw send points per local
station
Maximum number of transient transmissions per
link scan 4 + slave stations

1.5 4 4
Total
number
of
stations Link scan time Remarks (Total number of
points for link devices)
Normal High-speed
(When "Clear"
is set in "Data
Link Error
Station
Setting") High-speed
(When "Hold" is
set in "Data
Link Error
Station
Setting") High-speed
remote net
(When "Clear"
is set in "Data
Link Error
Station
Setting") High-speed
remote net
(When "Hold" is
set in "Data
Link Error
Station
Setting")
2 0.75ms 0.24ms 0.23ms 0.24ms
*1
0.23ms
*1
576 bytes
4 0.85ms 0.33ms 0.29ms 0.33ms
*1
0.29ms
*1
1152 bytes
8 1.05ms 0.49ms 0.42ms 0.49ms
*1
0.42ms
*1
2304 bytes
16 1.44ms 0.82ms 0.68ms 0.59ms 0.54ms 4608 bytes
32 2.22ms 1.49ms 1.21ms 0.84ms 0.73ms 9216 bytes
64 3.78ms 2.82ms 2.26ms 1.35ms 1.13ms 17280 bytes
120 6.52ms 5.14ms 4.09ms 2.24ms 1.83ms 34560 bytes