Serial to Ethernet module USR-TCP232-T24 series
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Jinan USR IOT Technology Limited
Page 28 of 53
2.8.2
2.8.2
2.8.2
2.8.2 Hardware
Hardware
Hardware
Hardware Description
Description
Description
Description
2.8.21
2.8.21
2.8.21
2.8.21 LED
LED
LED
LED status
status
status
status
There are two leds in RJ45 connector, one is green, and the other is yellow. And 1 power led.
LED
Name
Description
red
Power
Light When Power on
green
Link state
Light when 100Mbps network linked
yellow
Data transfer
Blink when there is data in or out
2.8.22
2.8.22
2.8.22
2.8.22 Interface
Interface
Interface
Interface Description
Description
Description
Description
Power
Power
Power
Power iiiinterface
nterface
nterface
nterface
DC5V power supply, you can make 5.5 * 2.1 standard power supply and 3.81mm pitch terminal blocks,
power input with TVS protection products.
RS
RS
RS
RS485
485
485
485 interface
interface
interface
interface
RS485 has two lines A(data+) and B(data-),the signal terminal 0.5A PTC Resettable Fuse, to prevent
accidental high current burn out the motherboard; Professional TVS lightning protection circuit design;
Internal 120R terminal matching resistor (the default is not used, the available short cap configured to use);
Can allow up to 32 transceiver node connected to the bus.
RS
RS
RS
RS422
422
422
422 interface
interface
interface
interface
RS422 lead wires are respectively A (RX +), B (RX-), Y (TX +), Z (TX) G (GND). Signal end has
characteristics of superheated tube, can prevent the output short circuit; Can allow up to 256 transceiver
node connected to the bus.
Notice:
Notice:
Notice:
Notice:
RS485 and RS422 cannot be used at the same time, by default it work at RS485 mode
RJ45
RJ45
RJ45
RJ45 internet
internet
internet
internet
Auto detected 10M/100M RJ45 interface, support AUTO MDI/MDIX
，
that is to say you can use crossover
cable or a straight cable to connect it to PC for test.
Pin
Name
Description
1
TX+
Transceiver Data+
2
TX-
Transceiver Data-
3
RX+
Receive Data+
4
n/c
Not connected
5
n/c
Not connected
6
RX-
Receive Data-
7
n/c
Not connected
8
n/c
Not connected
