1-5
EX9000 Series
USB to RS422/485 Modul
EX9531
The EX-9531 convert is an intelligent, stackable expansion module tha
connects to a PC USB port or USB Hub via the Universal Serial Bus(USB) port,
providing one High-Speed RS-422 or RS-485 serial port(jumperless) The
EX-9531 features easy connectivity for traditional serial devices.
The RS-232 standard supports full-duplex communication and handshaking
signals (such as RTS, CTS) and The RS-485 control is completely transparen
to the user and software written for half-duplex COM works without an
modification.
The EX-9531's Opto-isolators provide 3000 Vdc of isolation to protect the hos
computer from ground loops and destructive voltage spikes on the RS-422/485
data lines.
EX-9531 also offer internal surge-protection on their data lines. Internal
high-speed transient suppressors on each data line protect the modules from
dangerous voltages levels or spikes.
The EX-9531 module derives the power from USB port and doesn’t need an
power adapter
Features
■ USB Controller: Compatibility USB Specification 1.1 Standard
■ USB interface connector: USB type B
■ Isolation Side: RS-422/485
■ Converted signals: RS-422 or RS-485 Auto switching
■ Handshake: RS422 support RTS & CTS handshake signals
■ Auto Switching Baud rate (bps):300 ~115.2 K BPS
■ Transmission and Receiving LED indicator
■ Isolation voltage: 3000 V DC
■ RS-422/RS-485 connector: plug-in screw terminal
■ Accessories (Supplied):NYLON DIN-rail Mounting Adapter SECC
Panel Mounting Bracket
■ Plug-in screw terminal wiring: Accepts AWG 1-#12 to #22 (0.5 to
2.5 mm) wires
■ Power requirement: USB bus power
■ Case: ABS with captive mounting hardware
■ Power consumption: 0.65 W
■ Operating temperature:0 ~ 70 °C (32 ~ 158 °F)
■ Storage temperature:-25 ~ 85 °C (13 ~ 185 °F)
■ Humidity: 5 ~ 95%, non-condensing
120 R32
R1 1/4W(DIP)
D+/TX+
D-/TX-
Provide on-board termination(120 ohm)
or by user (R1) for D+/TX+ & D-/TX-
JP1
Termination Resistor “R1” for D+/TX+ & D-/TX-
Termination Resistor “R2” for RX+ & RX-
Termination Resistor “R3” for CTS+/CTS-
Termination Resistor “R4” for RTS+/RTS-
If the length of RS-485 is about 1.2KM, try 120 ohm first.
If the length of RS-485 is about 600M, try 220 ohm first.
If the len
th of RS-485 is about 300M
tr
330 ohm first.
USB
Controller
Data+
Data-
+5V
GND
Isolated
Power Supply
Auto
baud rate
detector
Protector
TX+/D+
TX- /D-
RX+
RX-
RTS+
RTS-
CTS+
CTS-
VSS
F.GND
Block dia
ram:
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