User manual

Transferring Data with the I/O Scanner
212
33002479 06 07/2008
140 CPU 65 150
with NOE 771 x1
(v3.3)
The 140 CPU 65 150 with an NOE 771 x1 (v3.3) is used used for the following
measurements:
The plot shows four lines representing the number of scanned devices:
z 1 device
z 8 devices
z 16 devices
z 32 devices
The four lines are indistinguishable at this scale because the response times are so
similar. You can see the similarity in the following table of data from which the above
graph was plotted:
PLC Scan Time (ms)
Time (ms)
Number of Devices to Scan Time from Scanned Device Input to Scanned Device Output (ms)
65150 + NOE 771x1 (v3.3) 10 ms scan 20 ms scan 50 ms scan 100 ms scan 200 ms scan
1 device 35 61 153 302 602
8 devices 36 62 154 303 603
16 devices 38 64 155 305 606
32 devices 40 66 157 307 609