140 NOE 771 •1 Performance
Original instructions
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Bandwidth Improvement
You can adjust the bandwidth between the NOE modules (140 NOE 771 01 and 140 NOE 771 11) and the CPU modules by configuring the number of messages per cycle and the size of the messages in the configuration tab of the processor editor screen. This bandwidth improvement is effective when using Control Expert under TCP/IP for addressing the CPU in server mode (i.e., from an OFS tool).
Bandwidth (in KB/s):
MAST Cycle Time (in ms)
Number of Messages per Cycle
Message Size (bytes)
50
100
150
300
4
256
20.1
10.1
6.8
3.4
4
1,024
75.7
39.3
26.6
13.5
8
1,024
140.8
75.7
51.8
26.6
12
1,024
197.3
109.4
75.7
39.3
NOTE: This functionality is only supported on CPU modules with version 2.80 or greater and NOE modules with version 4.60 or greater. Increasing this bandwidth has an impact on the cycle time of the processor.
Refer to the bandwidth monitoring topic in the Modicon Quantum with EcoStruxure™Control Expert Ethernet Network Modules User Manual for more detail.