
21
3.27 PANEL POWER SELECTOR (J1)
3.28 GPIO (GPIO1)
PIN SIGNAL PIN SIGNAL
1 GPIO0 2 VCC
3 GPIO1 4 GPIO7
5 GPIO2 6 GPIO6
7 GPIO3 8 GPIO5
9 GND 10 GPIO4
3.29 RS232/422/485 SWITCH (JP1)
SET SIGNAL
1-2
3.3V
2-3
5V
SET SIGNAL
1-2
RS232
3-4
RS422
5-6
RS485
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