SMART MODULAR TECHNOLOGY HF2211 Serial Server Device User Manual

The HF2211 provides RS232/RS485/RS422 interface to Ethernet/Wi-Fi connectivity to web enable any device. The HF2211 integrate TCP/IP controller, memory, 10/100M Ethernet transceiver, highspeed serial port and integrates a fully developed TCP/IP network stack and ECos OS. The HF2211 also includes an embedded web server used to remotely configure, monitor, or troubleshoot the attached device.

The HF2211 using highly integrated hardware and software platform. It has been optimized for all kinds of applications in the industrial control, smart grid, personal medical application and remote control that have lower data rates, and transmit or receive data on an infrequent basis.

The HF2211 integrates all serial to Ethernet functionality with 95 x 65 x 25mm size.

Device Paremeters

Table 1. HF2211 Technical Specifications

Item	Parameters
System Information
Processor/Frequency	MIPS/320MHz
Flash/SDRAM	4MB/8MB
Operating System	eCos
Ethernet Port
Port Number	1 RJ45 1 WAN/LAN switchable
Interface Standard	10/100 Base-T Auto-Negotiation
Protection	8KV Isolation
Transformer	Integrated
Network Protocol	IP, TCP, UDP, DHCP, DNS, HTTP Server/Client, ARP, BOOTP, AutoIP, ICMP, Web socket, Telnet, uPNP, NTP, Modbus TCP
Security Protocol	TLS v1.2 AES 128Bit DES3
Wi-Fi Interface
Standard	802.11 b/g/n
Frequency	2.412GHz-2.484GHz
Network Mode	STA/AP/STA+AP
Security	WEP/WPAPSK/WPA2PSK
Encryption	WEP64/WEP128/TKIP/ AES
Tx Power	802.11b: +20dBm (Max.) 802.11g: +18dBm (Max.)802.11n: +15dBm (Max.)
Rx Sensitive	802.11b: -89dBm 802.11g: -81dBm 802.11n: -71dBm
Antenna	3dBi Stick Antenna
Serial Port
Port Number	1 RS232/RS485/RS422
Interface Standard	RS232: DB9 RS485/RS422: 5.08mm connector Support one channel of RS232/RS422/RS485.
Data Bits	8
Stop Bit	1,2
Check Bit	None, Even, Odd
Baud Rate	TTL: 2400 bps~230400 bps
Flow Control	No Flow Control Hardware RTS/CTS、DSR/DTR Software Xon/ Xoff flow control
Software
Web Pages	Http Web Configuration Customization of HTTP Web Pages
Configuration	Web CLI XML import Telnet IOTService PC Software
Firmware Upgrade	Web
Basic Parameter
Size	95 x 65 x 25 mm
Operating Temp.	-25 ~ 85°C
Storage Temp.	-45 ~ 105°C, 5 ~ 95% RH（no condensation）
Input Voltage	5~36VDC
Working Current	~200mA
Power	<700mW
Other Information
Certificate	CE, FCC, RoHS

Key Application

The HF2211 device connects serial device to Ethernet networks using the TCP/IP protocol:

– Remote equipment monitoring
– Asset tracking and telemetry
– Security Application
– Industrial sensors and controls
– Medical devices
– ATM machines
– Data collection devices
– Universal Power Supply (UPS) management units
– Telecommunications equipment
– Data display devices
– Handheld instruments
– Modems
– Time/attendance clocks and terminals

HARDWARE INTRODUCTION

The HF2211 unit is a complete solution for serial port device connecting to network. This powerful device supports a 10/100BASE-T Ethernet connection, a reliable and proven operating system stored in flash memory, an embedded web server, a full TCP/IP protocol stack, and standards-based (AES) encryption.

Through Ethernet cable connect router with HF2211 serial server for data transfer, which makes the data transformation very simple. HF2211 meet EMC Class B security level, It can pass every countries relevant certification test

Pins Definition

Table 2. HF2211 Interface Definition

Function	Name	Description
External Interface	RJ45 Ethernet	10/100M Ethernet Default is WAN function in AP mode (Can be configured to LAN Function), connect to router LAN port for network access. In STA mode, it works in LAN function.
	SMA	Antenna SMA Interface
	RS232	RS232 Communication
	RS485/RS422	RS485/RS422 Communication
	Earth	Protect Earth
	DC Input	DC Power 5~36V
LED Indicator	Power	Internal Power Supply Indicator On: Power is OK Off: Power is NG
	Link	Network Connection Indicator On: Include the following condition. – Ethernet 2 connection OK- Wi-Fi STA connect to AP – Wi-Fi AP being connected by another STA device Off: No network connection
	Active	Data transfer Indicator On: Data is transferring. Off: No data transfer
Button	Reload	Restore to factory setting Long press this button for 4 seconds and loose it to restore parameters to factory setting.
Switch	Protect	Device parameter protect On: Enable protect, working parameter cannot be modified. Off: Disable protect.

RS232 Interface

Device serial port is male(needle), RS232 voltage level (can connect to PC directly), Pin Order is consistent with PC COM port. Use cross Cable connected with PC (2-3 cross, 7-8 cross, 5-5 direct, 7-8 no connection), see the following table for pin definition.

Table 3. RS232 Interface

Pin Number	Name	Description
2	RXD	Receive Data
3	TXD	Send Data
5	GND	GND
7	RTS	Request to Send
8	CTS	Clear to Send

RS485 Interface

RS485 use two wire links, A(DATA+), B(DATA-). Connect A (+) to A (+), B (-) to B (-) for communication.

Name	Description
TX+	Transfer Data+
TX-	Transfer Data-
RX+	Receive Data+
RX-	Receive Data-

RJ45 Interface

Table 4. RJ45 Interface

Pin Number	Name	Description
1	TX+	Transfer Data+
2	TX-	Transfer Data-
3	RX+	Receive Data+
4	PHY-VCC	Transformer Tap Voltage
5	PHY-VCC	Transformer Tap Voltage
6	RX-	Receive Data-
7	N.C.	None Connect
8	N.C.	None Connect

Mechanical Size

The dimensions of HF2211 are defined as following picture (mm):

Rail Mounting

We support to provide rail for mounting as the following picture.

Order Information

HF2211 is defined as following:

NETWORK STRUCTURE

Wireless Network

HF2211 can be set as a wireless STA and AP as well. And logically, it supports two wireless interfaces, one is used as STA and the other is AP. Other STA devices can join into the wireless network through AP interface. So, the it can provide flexible networking method and network topology. Functions is as follow:

<Introductions>
AP: Wireless access point which is the central joint. Usually, wireless router is a AP, other STA devices can connect with AP to join the network.

STA: Wireless station which is terminal of a wireless network. Such as laptop and pad etc.

AP Network

HF2211 can construct a wireless network as AP. All the STA devices will consider the AP as the centre of the wireless network. The mutual communication can be transponded by AP, shown as follow:

STA Wireless Network

Take the following picture as example. When router works in AP mode, HF2211 connects to the user’s devices by RS232/RS485 interface. In this topology, the whole wireless network can be easily stretched.

AP+STA Wireless Network

HF2211 can support AP+STA method. It can support AP and STA interface at the same time. Shown as follow:

In this picture, HF2211 open the AP+STA function and the STA interface can be connected to the remote server by the router. Similarly, the AP interface can also be used. Phone/PAD can be connected to the AP interface and to control the serial devices or set itself.

Through AP+STA function, it is convenient to use Phone/PAD to monitor the user’s devices and not change its original settings.

Through AP+STA function, it is convenient to configure the product. And, it solves the problem that the formal product can only configure by serial port.

Notes that:
When the AP+STA function is opened, the STA interface needs to connect to other router. Otherwise, STA interface will endlessly scan the router information nearby. When it is scanning, it will bring bad effects to the AP interface, like losing data etc.
AP and STA parts must set to the different sub-network for the product working as APSTA mode.

IOTService Software

Open the IOTService after connect to the AP hotspot generated by HF2211 or connect to Product Ethernet port to PC, then configure the parameter.

Webpage Configuration

Use PC to connect with HF2211 through its AP hotspot or Ethernet connection. Input the default IP (10.10.100.254, default username and password: admin/admin) to login the webpage to configure the parameter.

Ethernet Interface Function

HF2211 provides with a 100M Ethernet interface. Through the 100M Ethernet interface, user can achieve the connection among WIFI, serial port and Ethernet port.

Ethernet Port with Wi-Fi

HF2211 servers as APSTA and generate a central network. The IP addresses of all the devices and modules are in the same network segment.
Note：
If product works in AP mode, then the Ethernet is working as WAN mode, PC will use Auto-IP to
set its IP when connect via Ethernet. Better to change via Wi-Fi, then the PC and other devices are all in same subnetwork. (10.10.100.xxx)

Ethernet Interface Function(Router)

The HF2211 device Ethernet interface work in router mode. When connect to router, it will get IP address from router (as picture 192.168.1.100). The product itself generate a subnet (10.10.100.254 default). The device from the Ethernet interface is assigned with IP address by module (10.10.100.101). Then the device and the PC1 are in the same subnet for network communication. A connection fro PC1 to PC2, but PC2 cannot actively connect to PC1.

Ethernet Port Function (Bridge)

The HF2211 device Ethernet interface work in router mode. When connect to router, it will get IP address from router (as picture 192.168.1.101). AT the whole network, the product is like an invisible device. PC1 and PC2 can communicated mutually without any constraint. But if product needs to connect with other devices, it needs set LAN IP address (192.168.1.10 as picture)
Notes:
Webpage, IOTService, or Cli command to set working mode, by default is router mode. It need reboot when change its working mode.