Intrepid Control Systems neoVI, Hardware Help

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General Purpose IO
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Overview
ne o VI ha s six ge ne ra l purpo se 5 VDC IO pins. T he se a re la be le d a s MISC signa ls o n the ne o VI co nne cto r . T he se pins ca n be use d fo r co ntro lling o r m o nito ring e x te rna l de vice s.
Basic Setup
T he ge ne ra l purpo se IO a re se tup in the ne o VI e x plo re r. T he ge ne ra l IO tre e no de is sho wn in figure 1. O n the pa ne l yo u ca n se tup the dire ctio n, type , a nd initia l sta te o f e a ch IO pin.
Ea ch MISC signa l ha s a dro p do wn bo x (figure 1 : bubble 1). In this dro p do wn bo x yo u ca n se t if the MISC pin is a n input, o utput initia lly o ff, o r a n o utput initia lly o n.
T he o utputs a re ca pa ble o f LED drive thro ugh a curre nt lim iting re sisto r. T he m a x im um curre nt o f a ll o utputs sho uld no t e x ce e d 50 m A. Fo r pro te ctio n, e a ch IO pin ha s a se rie s 100 o hm re sisto r a nd a tra nsie nt pro te ctio n
de vice .
A nalog Inputs
If se tup a s input, MISC pins 3 thro ugh 6 ca n be se tup a s a na lo g inputs. Yo u ca n se tup a na lo g inputs via the "Ana lo g Se tting" dro p do wn (figure 1 : bubble 2). T he se ttings a re : 1) no a na lo g inputs, 2) a na lo g input o n MISC 3,
a nd 3) a na lo g inputs o n MISC 3-6.
W he n se tting up MISC 3 o nly, the sa m pling ra te will be o nce pe r m illise co nd. If the se tting is fo r MISC 3-6, the sa m ple ra te will be e ve ry fo ur m illise co nds.
General IO Reporting
Yo u ca n se tup the ge ne ra l IO to be a uto m a tica lly re po rte d to the ho st in ne o VI e x plo re r (figure 2). Yo u ca n se tup the ge ne ra l IO to be re po rte d a t a n inte rva l o r ba se d o n digita l inputs cha nging (figure 2 : bubble 1). T he
re po rt will be se nt to the ho st a s a
ne o VI De vice Virtua l Ne two rk m e ssa ge .
W he n re po rting ba se d o n inte rva l is se le cte d yo u ca n se le ct the inte rva l fro m the dro p do wn bo x sho wn in bubble 2 in figure 2. Yo u ca n se le ct a n inte rva l fro m 1 to 125 m s.
If yo u se le cte d a re po rt ba se d o n digita l cha nge , yo u ca n se le ct bo th a n inte rva l the inputs a re te ste d (figure 2 : bubble 2) a nd which digita l inputs to te st (figure 2 : bubble 3). Yo u ca n se le ct a s m a ny a s a re liste d.
T he re po rt ba se d o n digita l cha nge will "de -bo unce " the re a ding by te sting the inputs twice . Ea ch te st will o ccur a t o ne -ha lf the tim e inte rva l.
Figure 1 - neoVI MISC pins can be setup as digital outputs, digital inputs or analog inputs.
Intrepid Hardware Help General Purpose IO
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