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(Default)
3-4
RS422
5-6
RS485