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USB-4COMi-M USB to Quad RS-422/485 to Serial Adapter Manual
The USB to Industrial Quad RS-422/485 Adapter is designed to make
industrial communication port expansion quick and simple.
Connecting to a USB port on your computer or USB hub, the USB to
Industrial Quad RS-422/485 Adapter instantly adds four industrial
communication ports to your system. By taking advantage of the USB
bus, the USB Industrial Quad RS-422/485 Adapter makes it easier than
ever to add RS-422 or RS-485 device to your system with easy plug-
and-play and hot plug features. Adapting the new technology, the
industrial I/O communication port expansion now takes the new bus
with easy and convenient connectivity.
The USB to Industrial Quad RS-422/485 Adapter provides instant
connectivity to four RS-422/485 communication devices for factory automation equipment, multi-drop data collection
devices, barcode readers, time clocks, scales, data entry terminals, PC to PC long distance communications and serial
communication in harsh environments. The USB Industrial I/O provides industrial solution for applications requiring
single node or multi-drop communications over short and long distance.
Features
•
Adds quad high speed RS-422 / 485 ports via USB connection
•
384 byte receive buffer
•
128 byte transmit buffer for high speed data throughput
•
Requires no IRQ, DMA, I/O port
•
Data rates: 300 bps to 1M bps
•
Serial Connector: four DB-9 male connectors
•
Auto transmit buffer control for 2-wire RS-485 half-duplex operation
•
Termination resistors installed on-board.
•
RS-422 data signals : TX-, TX+, RX+, RX-, GND, RTS-, RTS+, CTS+, CTS-
•
RS-485 data signals: Tx-, Tx+, Rx+, Rx-(4 wire) and data-, data+ (2 wire).
•
Monitor LEDs of TxD, RxD indicating port status
•
Self-powered. Power adapter of 5V, 1.6 Amp included
•
Virtual COM port drivers available for Windows 7, Vista, 2003, XP, 2000.
Power Supply
This 4-port RS-422/485 Adapter is provided with an external switching power adapter in the package.
Hardware Installation
Outside the unit, there are four 4-pin DIP switches which are set to select the mode of operation. You will need to set
the switch settings to RS-422 mode, or RS-485 mode, as per the requirements of your application. After setting of
switches and connecting power supply to the adapter, you then plug the adapter to USB port to start driver installation.
The RS-422 & RS-485 Mode Block Configuration Settings are listed as follows.
Sales@coolgear.com
www.CoolGear.com
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Summary of Contents for CoolGear USB-4COMi-M
- Page 1 USB-4COMi-M USB to Quad RS-422/485 to Serial Adapter Manual The USB to Industrial Quad RS-422/485 Adapter is designed to make industrial communication port expansion quick and simple. Connecting to a USB port on your computer or USB hub, the USB to Industrial Quad RS-422/485 Adapter instantly adds four industrial communication ports to your system.
- Page 2 Before applying the option, check your cable specification for proper impedance matching. Biasing of data lines must only occur at a single point anywhere in the cabling. The USB-4COMi-M provides biasing for ease of installation. Please be sure to disable this inside the unit, if your cabling already provides biasing.
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Page 3: Check Installation
Change COM Port Properties & COM Port Number This feature is particularly useful for programs, such as HyperTerminal, which only work with COM1 through COM4. Please ensure that you do not change the COM Port Number already in use. Sales@coolgear.com www.CoolGear.com... - Page 4 4. When following dialog box appears, double click “Clean System” to uninstall the 2003/XP/2000 drivers. 5. You need to disconnect all USB to serial Adapters from your PC, when the message below appears. Double click “OK” to start uninstalling Windows 2003/XP/2000 USB to Serial drivers. Sales@coolgear.com www.CoolGear.com...
- Page 5 6. Double click “Yes” to confirm it. 7. Click “No” to proceed. 8. When the message “Status: System clean completed” appears, double click “Exit” to complete the USB to serial drivers uninstall. 9. Press “Start” button and select “Control Panel”. Sales@coolgear.com www.CoolGear.com...
- Page 6 1. The USB to serial devices must connect to the PC. 2. Press “Start” button and select “Control Panel”. 3. Select “Classic View” from the top left hand corner and then “System” from the list. 4. Select “Device Manager” from the top left hand corner. Sales@coolgear.com www.CoolGear.com...
- Page 7 5. Locate your Device under the Ports (COM & LTP) section and right click on it to bring up the menu shown. 6. Select uninstall and be sure to click the box for “Delete the driver software for this device” in the next window and press “OK”. Sales@coolgear.com www.CoolGear.com...
- Page 8 8. Select uninstall and be sure to click the box for “Delete the driver software for this device” in the next window and press “OK”. Note: if you have more than one USB Serial Converter installed in your PC, you need to repeat step 7 and step 8 to delete the driver software for all devices. Sales@coolgear.com www.CoolGear.com...
- Page 9 Pin 7 RTS+ (B) Pin 8 CTS+ (B) Pin 9 CTS- (A) RS-422 Signal Wiring • Point-to-Point 4-Wire Full Duplex USB-4COMi-M RS-422 Device 2 TxD+ (B) RxD+ (B) 1 TxD- (A) RxD- (A) 3 RxD+ (B) TxD+ (B) 4 RxD- (A) TxD- (A) •...
- Page 10 RS-485 2-Wire (Half duplex) Signal Pin-outs of DB-9 Male Connector Pin 1 Data- (A) Pin 2 Data+ (B) Pin 5 RS-485 Signal Wiring • Point-to-Point 4 Wire Full Duplex USB-4COMi-M RS-485 Device 2 TxD+ (B) RxD+ (B) 1 TxD- (A) RxD- (A) 3 RxD+ (B) TxD+ (B)
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