Z-World Wildcat BL2000 User Manual page 21

Figure 7(c). Example of Logic Gate Driving BL2000 Digital Input
The actual switching threshold is approximately 2.40 V for channels IN0–IN10. Anything
below this value is a logic 0, and anything above is a logic 1
The A/D converter inputs can be used as additional digital inputs using the parameters
specified for the
digIn
IN21 is also set to 2.40 V, but may be changed by adding two lines to your program as dis-
cussed for the
digIn
The digital inputs are each fully protected over a range of -36 V to +36 V, and can handle
short spikes of ±40 V.
User's Manual
software function call. The default threshold for channels IN11–
software function call.
Spikes
+40 V
+36 V
+3.3 V
–40 V
Figure 8. BL2000 Digital Input Protected Range
JP6
JP6
Vcc
3
1
27 kW
22 kW
Rabbit 2000 ™
10 nF
Microprocessor
.
Normal Switching
Levels
Spikes
Spikes
17