Update Time Calculation Example - Allen-Bradley SLC 500 User Manual
4-channel thermocouple/mv
input module
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Also See for SLC 500:
- User manual (294 pages) ,
- Installation and operation manual (244 pages) ,
- Installation instructions manual (48 pages)
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4-8
Preliminary Operating Considerations
Publication 1746-UM007C-EN-P - July 2004
Update Time Calculation Example
The following example shows how to calculate the module update
time for the given configuration:
• channel 0 configured for 250 Hz filter frequency, enabled
• channel 1 configured for 250 Hz filter frequency, enabled
• channel 2 configured for 50 Hz filter frequency, enabled
• channel 3 disabled
Using the values from the table above, add the the sum of all enabled
channel sample times, plus one CJC update time.
• channel 0 sampling time = 12 ms
• channel 1 sampling time = 12 ms
• channel 2 sampling time = 60 ms
• CJC update time = 14 ms
Module update time = 12 + 12 + 60 + 14 = 98 ms
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