Appendix 6 Differences In Cyclic Transmission Modes - Mitsubishi Electric MELSEC SW1DNC-CCIEF-B User Manual

Appendix 6
This section explains the differences between "Online (Normal Mode)" and "Online (High Speed Mode)" for the CC-Link IE
Field Network board. Refer to the information in this section to select "Online (Normal Mode)" and "Online (High Speed
Mode)".
Differences in performance specifications
The following items can be selected.
Item
Maximum number of RWw send points per local station
Maximum number of transients per link scan
Differences in link scan time
The link scan times in normal mode and high speed mode are shown below when assigning 128 points to RX/RY per station,
64 points to RWw/RWr per station, and the number of connected stations is increased.
Total Link scan time (ms)
number of
Online (Normal mode)
stations
2 0.75
4 0.85
8 1.05
16 1.44
32 2.22
64 3.78
120 6.52
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
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Appendix 6 Differences in Cyclic Transmission Modes

Differences in Cyclic Transmission
Modes
Online (Normal mode)
1024 points, 2048 bytes
4 + slave stations × 1.5
Online (High speed mode)
Network Operation Setting: "Turn
OFF or 0 Clear Input Data (RX/
RY)"
0.24
0.33
0.49
0.82
1.49
2.82
5.14
32 48 64
Total number of stations
Network Operation Setting:
"Hold Input Data (RX/RY)"
0.23
0.29
0.42
0.68
1.21
2.26
4.09
Normal mode
High speed mode_Input data OFF
High speed mode_Input data held
80 96 112
Online (High speed mode)
256 points, 512 bytes
4
Total number of points
for link devices (bytes)
576
1152
2304
4608
9216
17280
34560
128