Sensoray 2246 - Manual (Page 35)

GPIO (J8)
Pin Signal Pin Signal
1 INR0 2 IND0
3 INR1 4 IND1
5 INR2 6 IND2
7 INR3 8 IND3
9 INR4 10 IND4
11 INR5 12 IND5
13 INR6 14 IND6
15 INR7 16 IND7
17 NC 18 NC
19 OUTNO0 20 OUTNC0
21 OUTC0 22 NC
23 OUTNO1 24 OUTNC1
25 OUTC1 26 NC
27 OUTNO2 28 OUTNC2
29 OUTC2 30 NC
31 OUTNO3 32 OUTNC3
33 OUTC3 34 NC
Notes:
The opto-coupled inputs should be connected as shown in Figure 6. The value of R1 must be
calculated to limit the current flowing through the LED to approximately 15mA. R1 may not
necessary if the internal resistor R3 limits the current enough.
35
INRx
INDx
R3
1K
2
1
3
4
8
7
6
5
16
15
14
13
12
11
10
9
OC2
CNC7H001
Users Supply
R1
2246
Users Gnd
S1
Figure 6