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Vision 120 as a multi channel event recorder


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I am using the Vision 120 as a controller for multiple zones of chemical application. Each zone has its own HMI programmable time schedule that activates on certain days of the week for programmed time(s) of the day. The program also has Holiday times that can be preset to override the weekly schedule along with warning lights and buzzers that come on before the zone activates. The program also adjusts for daylight savings time with a multi-national setup screen.

My problem is with all the things going on at one time it is very difficult to monitor everything for "random" errors using real time lights and bells. I have looked at the Simple Logger II 4-channel Event Logger L404 from www.Aemc.com. To my way of thinking there must be a way to program the 120 Vision to make a great Data logger for multiple inputs. I would use the log to determine if the first Vision or whatever was doing what it was supposed to do when it was supposed to be doing it. I hired this program written, but I would like someway to determine if the program is working properly in all channels. I also have many other applications where I could use a good Vision / multi -channel data logger.

Am I nuts?

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  • MVP 2014

You are on the right track. The details may just take some working through.

I would point you in the direction of two features:

  • Data tables - allows you to log data for later reveiw. Data logged can be in a mix of formats (bit, byte, integer, long, etc). It can be read back from within the ladder program or also extracted in human-readable form.
    Example: C:\Program Files\Unitronics\Unitronics VisiLogic_C\Examples\Version 900\Project examples\Data Table\V120_Data_log_with_time_stamp.vlp
  • Events Function Block - allows you to track more than one alarm event and deal with them individually.
    Example: C:\Program Files\Unitronics\Unitronics VisiLogic_C\Examples\Version 900\Project examples\Events\V120_Alarms_display_and_log.vlp

The above examples can be found in your Visilogic installation unde the Help menu, Examples sub-menu. Or you can find them directly on your C drive using the above paths (which may be slightly different if you are not using Visilogic Version 9).

I hope this helps.

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