Monoprice 39263 User manual

Wi-Fi®/LAN to RS-232/RS-485 Converter
P/N 39263
User's Manual

2
SAFETY WARNINGS AND GUIDELINES
Please read this entire manual before using this device, paying extra attention to these safety
warnings and guidelines. Please keep this manual in a safe place for future reference.
•This device is intended for indoor use only.
•Do not expose this device to water or moisture of any kind. Do not place drinks or other
containers with moisture on or near the device. If moisture does get in or on the device,
immediately unplug it from the power outlet and allow it to fully dry before reapplying
power.
•Do not touch the device, the power cord, or any other connected cables with wet
hands.
•Do not expose this device to excessively high temperatures. Do not place it in, on, or
near a heat source, such as a fireplace, stove, radiator, etc. Do not leave it in direct
sunlight.
•Prior to operation, check the unit and power cord for physical damage. Do not use if
physical damage has occurred.
•Before plugging the unit into a power outlet, ensure that the outlet provides the same
type and level of power required by the device.
•Unplug this device from the power source when not in use.
•Take care to prevent damage to the power cord. Do not allow it to become crimped,
pinched, walked on, or become tangled with other cords. Ensure that the power cord
does not present a tripping hazard.
•Never unplug the unit by pulling on the power cord. Always grasp the connector head
or adapter body.
•Clean using a soft, dry cloth only. Do not use chemical cleaners, solvents, or detergents.
For stubborn deposits, moisten the cloth with warm water.
•This device has no user serviceable parts. Do not attempt to open, service, or modify
this device.

3
INTRODUCTION
This Wi-Fi®/LAN to RS-232/RS-485 Converter allows for remote access, configuration, and the
ability to control any RS-232 or RS-485 serial device over a wired Ethernet or Wi-Fi network
connection. It supports the WEP, WPA-PSK, WPA2-PSK, and WAPI security protocols, as well
as the WEP64, WEP128, TKIP, and AES encryption standards. It has extremely low latency and is
suitable for use in a battery powered system.
FEATURES
•Can connect to an existing wired Ethernet or wireless Wi-Fi® network
•Can control any RS-232 or RS-485 device
•Supports the WEP, WPA-PSK, WPA2-PSK, and WAPI security protocols
•Supports the WEP64, WEP128, TKIP, and AES encryption standards
•Can be configured as a Wi-Fi router or access point
CUSTOMER SERVICE
The Monoprice Customer Service department is dedicated to ensuring that your ordering,
purchasing, and delivery experience is second to none. If you have any problem with your
order, please give us an opportunity to make it right. You can contact a Monoprice Customer
Service representative through the Live Chat link on our website www.monoprice.com or via
email at [email protected]. Check the website for support times and links.
PACKAGE CONTENTS
Please take an inventory of the package contents to ensure you have all the items listed
below. If anything is missing or damaged, please contact Monoprice Customer Service for a
replacement.
1x Wi-Fi®/LAN to RS-232/RS-485 converter
1x Wi-Fi antenna
1x 9-pin RS-232 cable
1x Cat5e Ethernet cable
1x AC power adapter (5 VDC, 1A)
1x User's manual

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PRODUCT OVERVIEW
1. RS-232: 9-pin DB-9 connector for connecting the included RS-232 cable to the RS-232 or
RS-485 device.
2. Power: DC barrel connector for connecting the included AC power adapter.
3. Antenna: SMA connector for attaching the included antenna.
4. Reset: Press and hold the button for about 10 seconds to reset the device to its factory
default settings.
5. WAN: RJ45 jack for connecting to a broadband modem.
6. LAN: RJ45 jack for connecting to an Ethernet router or switch.
7. Wi-Fi Status: The LED flashes green when the converter is connected to a Wi-Fi®
network and is off when there is no connection.
RS-232 PINOUT
Pin #
Function
Input/Output
Description
1
N/A
N/A
N/A
2
RxD
Input
Data receiving input
3
TxD
Output
Data sending output
4
N/A
N/A
N/A
5
GND
Input
Ground
6
N/A
N/A
N/A
7
N/A
N/A
N/A
8
N/A
N/A
N/A
9
N/A
N/A
N/A

5
RJ45 PINOUT
Pin #
Function
Input/Output
Description
1
TX+
Output
Transmit Data +
2
TX-
Output
Transmit Data -
3
RX+
Input
Receive Data +
4
N/A
N/A
N/A
5
N/A
N/A
N/A
6
RX-
Input
Receive Data -
7
N/A
N/A
N/A
8
N/A
N/A
N/A
SAMPLE CONNECTION DIAGRAM

6
INSTALLATION
Perform the following steps to connect the converter to your network and your
RS-232/RS-485 device.
1. Place the Converter near the device you want to control.
2. Using the included 9-pin RS-232 cable, plug one end into the RS-232 port on your
device, then plug the other end into the RS-232 port on the Converter.
3. If you intend to use a wired connection to the Converter, plug one end of the
included Ethernet cable into the LAN port on the Converter, then plug the other end
into an available LAN port on your router.
Alternatively, if you intend to use a Wi-Fi® connection to the Converter, attach the
included Wi-Fi antenna to the Antenna connector on the Converter.
4. Plug one end of the included AC power adapter into the Power connector on the
Converter, then plug the adapter into a nearby AC power outlet.
5. Depending on whether you are using a wired or wireless connection, perform the
steps in one of the following sections to connect to the Converter using your web
browser.
Wired
1. Open a web browser and connect to your router using the instructions found in your
router's user's manual.
2. In the router's user interface, check the DHCP client to determine the IP address of
the Converter.
3. Enter the IP address into the address bar on your browser and hit ENTER to access
the Converter's Web GUI Login screen.
Wireless
1. Create a wireless connection to the converter using the following Wi-Fi® settings:
SSID: HLINK
Password: 12345678
2. Once you are connected, open a web browser, type 192.168.16.254 into the address
bar, and hit ENTER to access the Converter's Web GUI Login screen.

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WEB GUI
Login
Enter the Username and Password into the fields on the dialog, then click the Sign In button to
continue. The default Username and Password are:
Username: admin
Password: admin
Serial2Net Settings
Click HLK-RM04 > Serial2Net Settings to get this screen, which allows you to change the
Wi-Fi® connection and login parameters.
You can change the NetMode setting, but we recommend leaving it at Default.

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System Settings
Click HLK-RM04 > Serial2Net UART 2 Settings to get this screen, which allows you to change
many network connection settings. The parameters in the Current column reflect the current
settings, while those in the Updated column are the new settings. Make changes, as desired,
then click the Apply button to save your changes.
Following are details about the entries.
•Serial Configure: Sets the serial communications parameters. The values are Baud
Rate, Data Bits, Parity, and Stop Bits, separated by commas.
•Serial Framing Length: Sets the Serial Framing Length, which is 64 by default and
usually remains unchanged.
•Serial Framing Timeout: Sets the amount of time (in milliseconds) for the Serial
Framing Timeout, which is 10 by default and usually remains unchanged.
•Network Mode: Select Client, Server, or None.
•Remote Server Domain/IP: Sets the IP address of the Remote Server Domain. This can
only be changed if the Network Mode is Client.
•Locale/Remote Port Number: Sets the port number. This can only be changed if the
Network Mode is Client or Server. When Network Mode is set to Client, this specifies
the port number of the remote server. When Network Mode is set to Server, this
specifies the local port number.
•Network Protocol: Select TCP, UDP, or None. For most configurations, set it to TCP.
•Network Timeout: Sets the amount of time (in seconds) of no data transmission
before the server disconnects. Set it to 0to never disconnect.

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System Management
Click Administration > Management to get this screen, which allows you to set the UI
Language and the login parameters (Username/Account and Password). The default Account
(Username) and Password are both admin (case sensitive). Click the Reboot button to save and
reload your new settings.
Settings Management
Once you have the Converter configured as you want, it is a good idea to save the settings to
a file on your computer. This allows you to maintain several different sets of settings and to
reload your settings in the event that they are changed from what you want. Click
Administration > Settings Management to get the following screen, which allows you to save
and load settings or to reset all settings to their factory default values.

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Home Page
Click the UART-WIFI-ETH label in the upper left corner of the screen to get the Home Page, as
shown below.
AP Configuration
Perform the following steps to configure the Converter to operate as a wireless Access Point
(AP).
1. From the Home Page, click HLK-RM04 > Operation Mode to get the following screen.
2. Click the radio button next to the AP Client label, then click the Apply button.