RS232 Serial
TTL UART
TO Ethernet TCPIP convert Module www.usr.cn
Jinan USR Technology Co., Ltd. Page 5 of 26 sales@usr.cn
2.
2.
2.
2. Work
Work
Work
Work Mode
Mode
Mode
Mode
2.1
2.1
2.1
2.1 Block
Block
Block
Block diagram
diagram
diagram
diagram
USR
-
TCP
232
- T
RS
232
to Ethernet
1
2
3
6
MCU
51
51
51
51
,
,
,
,
AVR
AVR
AVR
AVR
,
,
,
,
PIC
PIC
PIC
PIC
,
,
,
,
ARM
ARM
ARM
ARM
VCC
VCC
RXD
RXD
RXD
RXD
TXD
TXD
TXD
TXD
TXD
TXD
TXD
TXD
RXD
RXD
RXD
RXD
Tx
Tx
Tx
Tx
+
+
+
+
Tx
Tx
Tx
Tx
-
-
-
-
Rx
Rx
Rx
Rx
+
+
+
+
Rx
Rx
Rx
Rx
-
-
-
-
2.2
2.2
2.2
2.2 TCP
TCP
TCP
TCP Client
Client
Client
Client Mode
Mode
Mode
Mode
MCU
51
51
51
51
,
,
,
,
AVR
AVR
AVR
AVR
,
,
,
,
PIC
PIC
PIC
PIC
,
,
,
,
ARM
ARM
ARM
ARM
RS
232
Ethernet
1
.
Module try to connect to server
2
.
Data transfer through the connection
1 . Server listen a TCP port
Module work at TCP Client mode
2.3
2.3
2.3
2.3 UDP
UDP
UDP
UDP client
client
client
client mode
mode
mode
mode
MCU
51
51
51
51
,
,
,
,
AVR
AVR
AVR
AVR
,
,
,
,
PIC
PIC
PIC
PIC
,
,
,
,
ARM
ARM
ARM
ARM
RS
232
Ethernet
1 . PC listen a UDP port
2
.
Data transfer
With out connection
,
only data packet
1
.
Module listen a UDP port
Module work at UDP mode