Product name： UOTEK mini RS-232 to RS-485 Converter
Model： UT-2201-PCBA
● Interface features: interface compatible with EIA/TIA RS-232C, RS485 standard
● Electrical interface: RS-232 DB9 female connector, RS-485 DB9 male connector, with terminal block (optional)
● Operating mode: Asynchronous half-duplex differential transmission
● Transmission medium: twisted pair or shielded wire
● Transmission rate: 300bps-115.2Kbps
● Dimension: 62.5mmX31mmX12.5mm
● Operating environment: -25~ 70°C, relative humidity of 5~95%
● Transmission distance: 1,200 m (RS-485) 5 m (RS-232)
● Protection level: 600W per line lightning surge protection for RS-485 interface
UT-2201-PCBA shape adopts DB-9/DB-9 universal adapter plug, where T/R+, T/R- represent transceiver A+, B-, VCC represents backup power input, GND represents common ground. Point-to-point, point-to-multipoint, half-duplex communication connected to two lines (T/R+, T/R-), the wiring principle "transmit / receive +" to the other side of the "transmit / receive +", "transmit / receive -" to the other side of the "transmit / receive When wiring in RS-485 half-duplex mode, connect T/R+ (transmit/receive+) to the other party's A+ and T/R-, and (transmit/receive-) to the other party's B-.
● RS-232C Pin Assignment
|
DB9 female(PIN) |
Interface signal |
|
1 |
GND |
|
2 |
Transmit data SOUT (TXD) |
|
3 |
Receive data SIN (RXD) |
|
4 |
DTR |
|
5 |
GND |
|
6 |
- |
|
7 |
DSR |
|
8 |
RTS |
|
9 |
RI |
● RS-485 output signal and terminal pin assignment
|
DB9 male(PIN) |
Output signal |
RS-485 half-duplex wiring |
|
1 |
T/R+ |
RS-485(A+) |
|
2 |
T/R- |
RS-485(B-) |
|
3 |
N/C |
- |
|
4 |
N/C |
- |
|
5 |
GND |
GND |
|
6 |
VCC |
+5V backup power input |
