HighTek HK-880 User manual

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Shenzhen FangXingLiuTong Industrial Co.,Ltd
HK-880 Use’s Manual
Serial Device Server

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Chapter 1 System introduction
1.1 Summary
HK-880 serial device server (brief name: serial device server) is the independent development networking product of our
company about RS-232/485/422 serial orifice terminal equipment. The HK-880 series product adopts 32bit ARM MCU and
combines efficiently embedded system and make equipment run more safe and stable
The HK-880 series serial device server none needs heavy investment to replace or upgrade, it can let the original
RS-232/485/422 serial industry control equipment immediately have a network to unite capability with each other, provide
efficient, safe, stable data gateway for the serial orifice data information. The HK-880 series product was applied to
communication and control realm extensively, such as electric power supervision, engine room supervision, PLC, intelligence
electric meter, gas meter and biological recognition device and reader...etc., it is the connectivity bridge between serial orifice
equipment and TCP/IP Ether network.
1.2 Function
◆Auto-detecting 10/100 Mbps Ethernet
◆Built-in 15 KV ESD protection for all serial signals.
◆Supports various operation mode: COM port redirector (Virtual COM port).
◆Versatile socket operation modes: TCP Server, TCP Client, UDP, and Ethernet Modem
◆Supports multi-access features: allows maximum of six hosts to access one serial port simultaneously
◆Pair Connection mode for connecting two serial devices over a network without a PC
◆Supports DNS（TCP Client Only）
◆Supports SNMP MIB-II for network management
◆Configuration via web/Telnet/serial console
◆Support to auto recovery after power and network break
◆Support to monitor the status。It can monitor the each orifice receives and dispatches through the website
◆The network of the enhancement installs setup and IP/MAC to filter rule and assure your arrangement and network
stability。
◆Provide a convenient firmware to upgrade, assure to continuously promote product performance and reliability
1.3 Specifications
LAN
Ethernet: 10/100 Mbps auto sensing
No. of Ports: 1
Port Connector: RJ45
Protection: Built-in 1.5 KV magnetic isolation

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Serial Interface
Interface：1-port RS-232/422/485(software selectable)
Port Type：Male DB9
RS-232 Signals：TXD, RXD, RTS, CTS, DTR, DSR, DCD, GND
RS-422 Signals：TX+, TX-, RX+, RX-, GND
RS-485 Signals：RS485+, RS485-, GND
Protection: 400W TVS protection
Serial Communication Parameters:
Parity：None, Even, Odd
Data Bits：5, 6, 7, 8，9
Stop Bit：1, 1.5, 2
Flow Control：RTS/CTS, DSR/DTR, Xon/Xoff
Transmission Speed：110~460.8Kbps
Software Features
Protocols：ICMP, IP, TCP, UDP, DHCP, Telnet, SNMP, HTTP
Utilities：Supports Windows 2000/XP/2003/Vista(32bit)
OS Drivers Support：Real COM drivers for Windows
Windows 2000/XP/2003
Configurations：Web interface, Windows utility, Telnet console
Power Requirements
Power Input：5 VDC
Power Consumption：0.15A@5V
Mechanical
Material：Aluminum case (1 mm)
Dimensions：76*53*22mm（L*W*H）
Environment
Operation Temperature：-10-60˚C
Storage Temperature：-20-85˚C (-4-185˚F)
Operating Humidity：5-95%RH
Warranty：2 years

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Chapter 2 hardware installation
2.1 equipment structure
2.2 Equipment installation
2.2.1 Connect network

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HK-880 serial device server product provide normal Ether net port, support MDI/MDI-X, It can link parallel wire and
exchange equipment, such as exchange machine, and HUB etc. or link secant wire and terminal equipment, such as Router
and PC etc..
2.2.2 Connect serial orifice equipment
HK-880 serial device server provide DB9 pin connecting orifice, support RS-232 (DTE) serial communication, it can
choose RS-485/422 connecting orifice (HK-880-A). DB9 pin connecting orifice are defined as below:
2.2.3 Indicator instruction
HK-880 serial device server product provide 6 status indicators, the indicators are defined as below:
DB9-M
RS-232
RS-422/485(4W)
RS-485(2W)
1
DCD (in)
TXD-
2
RXD (in)
TXD+
3
TXD(out)
RXD+
Data+
4
DTR (out)
RXD-
Data-
5
GND
GND
GND
6
DSR (in)
---
---
7
RTS (out)
---
---
8
CTS (in)
---
---
9
---
---
---
indicator
instruction
color
status
PWR
Power input status
red
Normally on：system power is connected
Normally off：equipment don’t connect direct current
LINK
Ethernet connecting
instruction
green
Normally on：Ethernet connecting orifice and net are connected
normally
Normally off：Ethernet connecting orifice and net don’t connected
TX
Serial data sending
instruction
green
twinkle：serial interface is sending data
Normally off：serial interface don’t send data
RX
Serial interface data receival
instruction
yellow
twinkle：serial interface is reciving data
Normally off：serial interface don’t receive data
RJ45-ACT
100M Active
yellow
100M: active
10M: normally off

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2.2.4 Equipment start-up and Reset switch operation
HK-880 provide Reset switch, it can be used to recover plant setup manually without enter HK-880
Power start-up step on the equipment
Connect DC IN interface and 5VDC power plug, PWR red LED is bright, Ethernet LINK LED is bright, then break, after
about 10 seconds(under normal start-up), TX/RX serial interface LED are twinkle 3 times, the system have finished initializtion
process
Note; if you want to start quickly, you can set to high speed start-up
Reset operation step:
①press Reset key
②connect the HK-880 power, PWR red LED is bright
③Wait for about 10 seconds, TX/RX LED is twinkle frequently, it mean the parameter recovered to plant setup, then
break and reconnect
Chapter 3 Manager method
3.1 Equipment manager method
HK-880 series serial device server can used Web browser, Telnet and Console to collocate and maintain, it can choose
corresponding manager style according to the status
3.1.1 Web browser management
Confirm to HK-880 serial device server and net are connect normally and keep it in the same net range with the
computer what equipment you want to enter, if you don’t know the equipment IP, you can used Console control plate and
dummy serial software to search the equipment IP. Enter HK-880 IP to the Web browser then the enter interface occur as
below:
HK-880 default IP: 192.168.0.200, enter default user name: admin, and password: admin, then enter into collocation
interface as picture:
RJ45-Link
Link status
green
Normally on：Ethernet connecting orifice and net are connected
normally
Normally off：Ethernet connecting orifice and net don’t connected

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Enter collocation interface, user can modify the IP according to the net status
3.2 Equipment parameter setup
3.2.1 Equipment collocation
Quick setup
HK-880 provide quick setup function, user can use the function to setup the serial device server step by step,
the operation is very easy despite you never used the serial device server product, use the function can collocate
HK-880 easy
Quick setup function divide into 4 steps:
Step 1: setup the IP, subnet mask, gateway and DNS server etc..
Step 2: setup the serial interface working style and speed etc..

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Step 3: setup application mode, the system default mode is Real COM
Step 4: save/restart, save and release the parameter user collocated
After the 4 steps setup, serial device server can work normally, you just need install the driver on the terminal
such as computer, then it can communicate with the HK-880 serial interface through the net
Server setup
You can collocate the HK-880 equipment net parameter in the serial device server interface, they are included
equipment name, IP, subnet mask, gateway, DNS server1, DNS server2, DHCP and Ethernet work mode:

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Auto is the default mode of Ethernet, user can set to 100M full/half and 10M full/half
If user need to use the HK-880 to access internet domain name, fill the main and secondary IP into the
DNS server 1 and DNS server 2 are necessary, so that can use the domain name server to explain the IP which domain
name you want to access.
Serial interface setup
Serial interface include :
Serial interface style:232/485/422
Baudrate: 110-460800bps
numeric bit data: 5~9
Stop position: 1、1.5、2
Parity check: None、Odd、Even
Flow control: None、CTS/RTS、DSR/DTR、Xon/Xoff
Inactivity Time: 5~5000 MSEL
Inactivity Time is exceed the value when HK-880 serial interface received the data, it can enclose the
data , then transmit. The system default value is 10 ms, you can set the time under 10 ms if you want
to increase the transmission, this need to according the actual status to set up.
Packing Length: 1~1024 byte
HK-880 will transmit the data packet immediately when the received data reach to value you set, the system default
value is 1024 byte.
Serial interface setup as the picture:

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Operation mode
Real COM
The each serial interface of the serial device server can reflect the serial interface of HK-880 to fictitious
serial interface local machine through the driver(Windows Virtual COM/Linux TTY）. Real COM collocate as
picture:
Data Socket
HK-880 serial device server provide normal Socket API net interface, user can used the Socket under
operating system which support TCP/IP to access to HK-880 server interface. TCP/UDP socket mode divide
into TCP Client, TCP server and UDP as TCP client, TCP server and UDP style
When two HK-880 product is used in pairs, you can collocate two equipment for TCP Clint and TCP
Server mode or UDP mode, The two side of HK-880 product connect RS-232/422/485 business interface,
the applied mode like this can connect two nonsynchronous terminal equipment through the IP transmission
network.

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1．TCP Client
When HK-880 product work on the TCP Client mode, it can connect the TCP terminal interface of
network actively such as PC server and distant HK-880 (TCP Server style) etc.. So need to tell HK-880
which net address and TCP terminal interface should be connected through corresponding setup. When
have connected TCP, HK-880 will send out the data from the serial interface through Socket and send the
data from the Socket to serial interface at the same time. TCP Clint style as picture:
Destination IPAddress: the IP address of distant terminal TCP Server
Destination IP support domain name access, after fill in corresponding domain name, HK-880 will automatically analyze
an IP address, and start customer port connectivity
Port : TCP interface number of distant TCP Server machine
Starting connection: starting connection condition
disconnection: disconnection condition
Inactivity times: if there aren’t any data transmission during the setup times, then disconnection
automatically, unit: second. Default value is 0 mean there isn’t any data transmission but never disconnection
2．TCP Server

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When HK-880 serial device server work on the TCP Server mode, its local TCP interface is on interception and
wait for other terminal machine or distant HK-880 which work on the TCP Clint mode to connect the local interface,
serial device server will receive and send data through the Socket after connect each other, The mode mainly used for
the network environment of HK-880 passive connectivity distant equipment
It need to fill in local interface on the TCP Server mode, opposite machine and interface isn’t need to fill in
Starting connection: starting connection condition
disconnection: disconnection condition
Inactivity time: if there aren’t any data transmission during the setup times, then
disconnection automatically, unit: second. Default value is 0 mean there isn’t any
data transmission but never disconnection
3．UDP
When HK-880 serial device server work on the UDP mode, it adopt non-connectivity UDP report communication to
receive and send data, So the both ends equipment none needs create a connectivity in advance and then can directly carry
on point- to-point, point-to-more point or the multicast communication. UDP work mode as picture:
Destination IPAddress: the IP address of distant UDP machine
Port : the interface number of distant UDP machine
Starting connection: starting connection condition

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disconnection: disconnection condition
Inactivity time: if there aren’t any data transmission during the setup times, then disconnection automatically, unit: second.
Default value is 0 mean there isn’t any data transmission but never disconnection
Note: if need to pass UDP negotiation and broadcast the serial data and apply point-to-point, you can set
opposite IP to 0.0.0.0 (UDP broadcast address), fill the local interface of distant serial device server which
need to access in the opposite interface, the distant serial device server need to set as this also. So all the
serial device server of net will receive and deal with the UDP data package.
System status
HK-880 provide the search function of current interface status, user can see the information about connection and
data transmission of each interface, it is easy to help user control the running of HK-880 and analyze the trouble of
the net. It can search the TCP status, UDP status and serial interface status in the “System status” as picture:
It can see all connection and data transmission of current equipment on the TCP status.

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It can see all local and distant IP and interface number which is communicating on the UDP status.
You can see the data transmission on the serial interface status, it can according to the change of these data to estimate
whether HK-880 can transmit data normally.
System management
System management provide the software and hardware information of HK-880 serial device server and recover
function as picture:
Click “Load Factory default” and “YES” according to the note, then the system can be recovered to original plant default
setup:
The setup is effective when you save and restart after recover

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Safety setup
HK-880 serial device server can set password to limit enter equipment and set the IP or MAC address filtration list as
picture
Change password: user can modify the user name and password.
Equipment original user: admin, password: admin
Console control
Broadcast search: it can search the HK-880 serial device server of the net and modify the IP
Web console: it can permit whether used the Web style to collocate the parameter of the HK-880 serial device server.
Telnet console: it can permit whether used Telnet style to collocate the parameter of HK-880 serial device server. Security
Filter Settings:
IP Address Filter: It can used IP setup to control the IP to read and write serial data of HK-880.
MAC Address Filter: it can used MAC address setup to control
the IP to read and write serial data of HK-880.

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Save/reboot
When finished the setup of HK-880 serial device server, it can save the information of HK-880 as Flash memorizer
through the “save/reboot”, then restart equipment and release the information as picture:
Chapter 4 software installation
4.1 software installation
4.1.1 system requirement
Operating system：Windows2000/XP/2003
Hardware requirement：PIII500MHz above、128M memory
4.1.2 software installation
Run the setup of folder as attached CD and install the serial device server program to the system

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The CD provide PDF document of read software and serial interface test, please see the detail on the CD
4.2 software setup
4.2.1 software setup
After finish the serial interface software installation, double click icon on the desktop or run the program from
start.
You can search all HK-880 serial device server in the net on the “scan” option, then click “modify IP address” to
set the IP which equipment was searched, run web browser, fill the IPaddress to enter web setup interface of HK-880
You can reflect HK-880 to dummy COM interface which be list on the serial interface option, click the setup to fill in IP
address and serial number etc.

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Attachment：
Interface line order
RS-232/485/422 DB9 Pin (Male) interface line order
RJ45
DB9-M
RS-232
RS-422/485(4W)
RS-485(2W)
1
DCD (in)
TXD-
2
RXD (in)
TXD+
3
TXD(out)
RXD+
Data+
4
DTR (out)
RXD-
Data-
5
GND
GND
GND
6
DSR (in)
---
---
7
RTS (out)
---
---
8
CTS (in)
---
---
9
---
---
---
RJ-45
Signal
1
TX+
2
TX-
3
RX+
4
---
5
---
6
RX-
7
---
8
---

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