SMART MODULAR TECHNOLOGY HF2211 Serial Server Device User Manual

: June 5, 2024
: SMART MODULAR TECHNOLOGY

SMART MODULAR TECHNOLOGY HF2211 Serial Server Device

Overview of Characteristic

MIPS MCU with 4MB Flash and 8MB SRAM. Run on eCos
Support TCP/IP/Telnet /Modbus TCP Protocol
Support RS232/RS422/RS485 to Ethernet/Wi-Fi Conversion, Serial Speed Upto 230400 bps
Support STA/AP/AP+STA Mode
Support Router or Bridge Network Working Mode.
Support 10/100M Ethernet Auto-Negotiation
Support Easy Configuration Through a Web Interface or PC IOTService Tool
Support Security Protocol Such As TLS/AES/DES3
Support Web OTA Wirelss Upgrade
Wide DC Input 5~36VDC
Size: 95 x 65 x 25 mm (L x W x H)
FCC/CE/RoHS Certificated

PRODUCT OVERVIEW

General Description

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

Network Protocol

| IP, TCP, UDP, DHCP, DNS, HTTP Server/Client, ARP, BOOTP, AutoIP, ICMP, Web socket, Telnet, uPNP, NTP, Modbus TCP

Security Protocol

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:

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.

FUNCTION DESCRIPTION

Refer to “IOT_Device_Series_Software_Funtion” document for more detailed function.

APPENDIX A: REFERENCES

A.1. Test Tools

IOTService Configure Software:
http://www.hi-flying.com/download-center-1/applications-1/download-item- iotservice
UART、Network Test software:
http://www.hi- flying.com/index.php?route=download/category&path=1_4

A.2. Quick Start Manual
See our product application on website:
http://www.hi-flying.com/wi-fi-iot/wi-fi-serial-server/rs232-rs485-rs422-to- wifi-serial-server