Allen-Bradley 2080-LC20-20QWB User Manual page 128

Chapter A Specifications
Datalog – Data Payload vs. Performance Time
Parameter
Average write time per datalog
file including all overheads
Average write time excluding first
sample
Average write time excluding all
overheads
Time (msec)
2750
2250
1750
1632.36
1250
1086.67
1043.75
999.1414141
963.858859
750
541.75
502.7840909
502.7840909 493.0344828
250
0 500
120
PWM Typical Readings
Frequency (Khz)
100
100
100
100
100
Datalog Performance
Number of Characters
28 502
541.77 ms 1043.75 ms
500.40 ms 963.86 ms
479.10 ms 502.78 ms
1972.9
1818.326531
1472.367347
519.9090909
505.5405405
1500 2000
1000
Expected Duty Cycle
%Duty Cycle Minimum
40% 38.00%
55% 53.00%
65% 63.00%
85% 83.00%
95% 93.00%
518 1028
1086.67 ms 1632.36 ms
999.14 ms 1472.36 ms
493.03 ms 505.54 ms
2500 3000
3500
Rockwell Automation Publication 2080-UM005B-EN-E - March 2015
Typical Duty Cycle
(1.27 KΩ load)
Maximum %Duty Cycle
65.00% 49.3
80.00% 64
90.00% 73.8
100.00% 92.4
100.00% 98
1493 3676
1972.9 ms 2696.22 ms
1818.33 ms 2545.92 ms
519.91 ms 715.68 ms
2692.22
2545.918367
Average write time
per datalog including
all overheads
Average write time
excluding first sample
Average write time
excluding all
overheads
715.68
Data Payload
4000