. Pin assignment:
1
DB9 male side
RS-485/RS-422
Port1-Port2
6
7
8
9
N/C
N/C
Db9 male
(PIN)
1
2
3
4
5
T/R+
T/R-
RXD+
RXD-
GND
T/
A+
T/B-
R/A+
R/B-
RS-422
RS-485
RS-485 (A+)
RS-485 (B-)
N/C
N/C
1
5
6
9
DB9 male
Profile
Hardware Interface
Connection Type: DR44 female x1;
BUS: X1 2.5Gbps PCI Express
Signal RS-422: T/R+
T/R-
RXD+
RXD-
GND;
Signal RS-485: Data+ (A) Data-(B) GND
Transmission Rate: 300bps-921.6Kbps
Data Bit: 5
6
7
8; Stop Bit: 1 1.5
2
Parity Bit: None
Even
odd
Space
Mark
Flow Control: RTS/CTS XON/XOFF
Operating Temperature: -45
80
Interface Protection:600W surge protection per line for RS-485
RS-422 interface,
15KV ESD protection
Transmission distance: RS-485/422 communication distance
reaches up to 1.2Km
Supporting System: Win2000/XP/Vista/Win7/NT4.0/CE 4.2/5.0/
6.0/Vxworks/Linux 2.4.x/2.6.x
PCI-Express to RS-485/422 card
2-Ports
Model: UT-792I
1
. Connect Diagram
2
3
35.3mm
(1.39in)
17mm
(0.69in)
1
2
0
m
m
(4
.7
2
in
)
8
5
m
m
(3
.3
4
in
)
102mm
(4.01in)
6
8
.5
m
m
(2
.6
9
in
)
. Faults and Ruling Out:
1
Data Communication Failure
A
Check the PCI-E interface
B
Check if RS-485/RS-422 output interface line is correct
C
Check if the power supply light is lit
D
Check if the line terminal is connected properly
E
Check if the receiving indicator is flashing during reception.
F
Check if the sending indicator is flashing during sending.
2
Data Loss or Mistake
A
Check if the speed and format of the data communication
UT-792I
UT-792I
UT-792I
UT-792I
Port1
Port1
Port1
Port1
RS-485 device
4.RS-485 P2P connection
3.RS-485 Point to Multi Point connection
2.RS-422 P2P connection
RS-422 device
1.RS-485 Point to Multi Point connection
GND
GND
N/C
UT-792I convert PCI-E into 2 ports RS-422/RS-485,industrial
grade, with built-in Opto-isolator and TVS. Integrated with
600W lightening surge protection for each line; with ESD
protection, protect your device against surge voltage and
transient over voltage caused by any other factors. It also
guarantees the high-speed transmission of RS-422/RS-485
interface.
Highly trust performance and stability with reasonable
price.
I. Summary
.Feature:
The speed of each interface can reaches up to 921.6Kbps
and supports 256byteFIFO drivers and internal soft and hardware
flow control. The universal use PCI is compatible with PCI-E.
RS-422 device
RS-485 device
RS-485 device
