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In this video workshop we're going to take a close look at the yellow color
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code indicated on the groov EPIC I/O module status LED. Now not all modules
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support the quality feature. For an up-to-date list of modules that do refer
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to the PAC control user's guide those. Modules that do support the feature
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continuously poll their channels for current data values and identify a
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deviation between reported and expected values. For example each channel on the
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module may detect if it's load as open circuit or in another case if the
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temperature sensor probe is faulty or perhaps if an analog output channel is
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being driven past its limits. The yellow color on the module status LED means
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that one or more channels on the module are outside of these expected ranges. Now let
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me show you how this works in practice. On my learning center here I have a
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temperature probe and if I unplug it you can see the status LED turns yellow
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indicating that I have a problem with one or more channels on this module. Now
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you can check which channels have the error from either the front touchscreen
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or from a web browser. To use the front touch screen simply press and hold the
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module and it'll start flashing indicating that this is the currently
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selected module. From there you can drill down and see which channel is causing
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the error. From a web browser on a phone or tablet or PC navigate to the groov
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EPIC hostname or IP address and select the I/O module from groov Manage home
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screen. There you can see which module has a yellow status and from there which
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channel has the problem. Also, note that depending on the module type and the
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signal voltage an open circuit may not cause a quality error and this is most
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likely because zero volts or zero milliamps is within that expected range
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for the channel on the module. Now if you have unused channels then the quality
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indicator needs be turned off on each of those
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channels before the yellow status LED will be cleared on the module. You can do
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this in groov Manage by selecting the unused channel, clicking configure and
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turning off the quality check for this channel and then selecting save. While you
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could simply turn off the quality detection for every channel on a given
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module this feature is extremely helpful in determining the module and channel
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health at a glance. Keeping it enabled for any in use
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channels will allow much faster troubleshooting. For more information on
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other status LED colors check out training.opto22.com