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3.2 Digital I/O
3.2.1 Digital Inputs
The BL2600 has 16 digital inputs, DIN16–DIN31, each of which is protected over a range
of –36 V to +36 V. The inputs are factory-configured to be pulled up to +5 V, but they can
also be pulled up to +K or DCIN, or pulled down to 0 V in banks by changing a jumper as
shown in Figure 7.
DCIN
+5 V
+3.3 V
+K
27 kW
100 kW
Rabbit 3000®
Microprocessor
GND
Figure 7. BL2600 Digital Inputs DIN16–DIN31 [Pulled Up—Factory Default]
Table 2 lists the banks of digital inputs and summarizes the jumper settings.
Table 2. Banks of BL2600 Digital Inputs
Digital Inputs
Header
Pins Jumpered
Pulled Up/Pulled Down
DIN16–DIN19
JP3
1–2
Inputs pulled up to +5 V
DIN20–DIN23
JP4
3–4
Inputs pulled up to DCIN
DIN24–DIN31
JP5
5–6
Inputs pulled up to +K
7–8
Inputs pulled down to GND
When you use the software digIn function call to read the digital inputs, DIN16–DIN31
are considered to be digital input channels 16–31.
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Wolf (BL2600)