Ebyte EBT3002 T6 User Manual page 9

Chengdu Ebyte Electronic Technology Co., Ltd.
43
44
45
46
47
48
49
50
51
52
Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co., Ltd.
Serial port 4 data transmission and reception
indication.
After power on, if no network cable is detected, it
defaults to being pulled
D-LED-4
low. When there is data transmission and reception, a
100ms cycle is used, and a 50ms low-level output pulse
is used. When there is no data, a high-level output is
used
Serial port 3 data transmission and reception
indication.
After power on, if no network cable is detected, it
defaults to being pulled
D-LED-3
low. When there is data transmission and reception, a
100ms cycle is used, and a 50ms low-level output pulse
is used. When there is no data, a high-level output is
used
Serial port 2 data transmission and reception
indication.
When no network cable is detected after power on, it
defaults to being pulled
D-LED-2
low. When there is data transmission and reception, a
100ms cycle is used, and a 50ms low-level output pulse
is used. When there is no data, a high-level output is
used
Serial port 1 data transmission and reception
indication.
After power on, if no network cable is detected, it
defaults to being pulled
D-LED-1
low. When there is data transmission and reception, a
100ms cycle is used, and a 500ms low-level output pulse
is used. When there is no data, a high-level output is
used
TXD3 Serial port 3 sending pin
RXD3 Serial port 3 receiving pin
VSS_ one Grounding
VIO_ one External 3.3V
Serial port 4 sends instructions (can be used as a 485
485-EN-4 send enable pin), pulling up during transmission and
pulling down during idle time
Serial port 3 sends instructions (can be used as a 485
485-EN-3 send enable pin), pulling up during transmission and
pulling down during idle time
EBT3002 User Manual