Appendix 8 Differences In Cyclic Transmission Modes - Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual

Appendix 8
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
Item
Maximum number of RWw send points per master
operating station and submaster operating station
(when using the submaster function)
Maximum number of RWw send points per local
station
Maximum number of transient transmissions per
link scan
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.
Total Link scan time
number
Normal High-speed
of
(When "Clear"
stations
is set in "Data
Link Error
Station
Setting")
2 0.75ms 0.24ms
4 0.85ms 0.33ms
8 1.05ms 0.49ms
16 1.44ms 0.82ms
32 2.22ms 1.49ms
64 3.78ms 2.82ms
120 6.52ms 5.14ms
*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.
Differences in Cyclic Transmission
Modes
Normal
1024 points, 2048 bytes
4 + slave stations  1.5
High-speed High-speed
(When "Hold" is remote net
set in "Data (When "Clear"
Link Error is set in "Data
Station Link Error
Setting") Station
Setting")
0.23ms 0.24ms
0.29ms 0.33ms
0.42ms 0.49ms
0.68ms 0.59ms
1.21ms 0.84ms
2.26ms 1.35ms
4.09ms 2.24ms
High-speed
256 points, 512 bytes
4
High-speed
remote net
(When "Hold" is
set in "Data
Link Error
Station
Setting")
*1 *1
0.23ms
*1 *1
0.29ms
*1 *1
0.42ms
0.54ms
0.73ms
1.13ms
1.83ms

Appendix 8 Differences in Cyclic Transmission Modes

High-speed remote net
0 point (The submaster station
and local station cannot be
connected.)
4
Remarks (Total number of
points for link devices)
576 bytes
1152 bytes
2304 bytes
4608 bytes
9216 bytes
17280 bytes
34560 bytes
APPX
379
A