USR IOT USR-TCP232-T2 - Page 11

USR-TCP232-T2 user manual www.usriot.com
Jinan USR IOT Technology Limited www.usriot.com
11
Diagram 3.1.1-2 3.3V to 5V voltage conversion circuit
Diagram 3.1.1-3 Reserved Pin
1
485-en
Reserve pin
RS485 enable pin
2
Link
Reserve pin
Used as indication pin for TCP connection status.
Refer to 4.4.2 Link Function
3
ISP
Reserve pin
Hasn’t use
Form 3.1.1-2 T2 Reserved Pin Definition