UTEK UT-66 Series User manual

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UTEK TECHNOLOGY (ASIA) CO., Ltd. http://www.szutek.com 0755-27886063
Instruction Manual the UT-66XX Series Serial
Server
Table of Contents
Chapter 1 General data on UT-66XX series serial server...................................................2
a) Product introduction..............................................................................................2
b) Main features.........................................................................................................2
c) Application mode......................................................................................................4
Chapter 2 Instruction on installation of UT-66XX series serial server.................................5
a) Instruction on software installation........................................................................5
b) Description of LED indicators................................................................................5
c) Definition of pins ....................................................................................................6
Chapter 3 echnical parameters of UT-66XX series serial server........................................7
a) Technical parameters...............................................................................................7
b)Product Configuration Table .....................................................................................8
Chapter 4 Description of WEB operation of UT-66XX series serial server......................9
a) Server Menu..........................................................................................................9
b) Serial Port Communication Settings.....................................................................9
c) Working mode.....................................................................................................10
d) Authority Management........................................................................................16
e) System Stats .......................................................................................................16
f) Miscellaneous......................................................................................................17
Chapter 5 Troubleshooting of UT-66XX series serial server.............................................17
a) Can’t find the IP address of the serial server after running upgrad.exe.............17
b) Unable to open a serial port................................................................................17
c) Can’t receive/send data ......................................................................................17
d) Forget the password previously set....................................................................17
e) Lousy code received/sent...................................................................................18
f) The serial communication server is used as the dialing server and the connection
is established normally. But it can’t be open by a PC using IE, while inputting the
IP in the address bar will do..................................................................................18
g) The serial communication server is used as a dialing server and the connection is
established normally. But it can’t be open fully or at all when using IE for
complicated pages or downloading of large files..................................................18
h) Unsuccessful PPP connection............................................................................18
i) Can’t be connected as a TCP server..................................................................18
Chapter 6 Accessories.......................................................................................................19
a) Modification of IP address...................................................................................19
b) Creation of virtual serial port...............................................................................19

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Chapter 1 General data on UT-66XX series serial server
a) Product introduction
The UT-66XX series serial communication server, also called - terminal server or serial server, is a
converter between the asynchronous serial port RS232/422/485 and Ethernet, which is an independent
intelligent device with a CPU, an embedded OS and a complete TCP/IP protocol stack. The device is
used for transparent and bidirectional data transmission between the RS232/422/485 and Ethernet, and
for enabling the instant connection to the network of the RS232/422/485 serial device.
Product features: Supports both dynamic IP (DHCP) and static IP, supports both gateway and proxy
server, able to transmit data through the Internet; Provides transparent and bidirectional data
transmission, able to convert serial port to TCP/IP without any additional modification to the existing
system made by the user; Internally integrated protocols: ARP, IP, TCP, HTTP, ICMP, SOCKET, UDP; Full
English interface for all programs, wizards are easy to use even for new computer users.
UT-66XX series serial server includes the following models
b) Main features
Hardware features
☆English menus of configuration interface with the various operation modes, able to meet the
application demand of different industries;
☆Virtual COM drive software for Windows;
☆Flexible and reasonable Fixedtty working scheme under UNIX;
☆1, 2, 4, 8, 16, or 32 serial ports to connect the various serial devices, including terminals, Modems,
barcode machines, cash receivers, ISDNs, terminal adapters, serial printers and PCs, etc., able to
support the remote control function;
☆Reset key is provided for the force reset after a system crash;
☆A 10/10M self-adaptive Ethernet port with possibility of manual configuration;
☆Complete signal is provided for each serial port, including DCD, RXD, TXD, DTR, DSR, TRS, CTS,
GND;
☆Powerful whole performance with the embedded 100M 32bit CPU and 8M RAM;
UT-6601 single port
serial server UT-6602 dual port
serial server UT-6604 quad port
serial server
UT-6608 8-port serial
server
UT-6616 16-port serial
server
UT-6632 32-port serial
server

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☆Independent indicator for each network port and serial port for convenient indication of working status;
Software features
★Supported protocols include ARP, IP, ICMP, UDP, TCP, PPP, HTTP, TELNET, DNS, DHCP, PAP, CHAP,
etc.
★Supports extended serial port mode under Windows
Complete extended serial port (com) drive based on the Windows platform, and simple and
easy-to-use management programs under the Windows platform. Up to 1024 serial ports under the
WindowsNT/Windows2000/WindowsXP, with each serial port of the UT-66XX series serial server
to be mapped as the local COM port of the Windows host PC. Operation of these ports is similar to
operation of the local COM ports on the host, plus, any existing software or communication module
of the original device can be used directly without any change.
★Supports the UNIX host login mode
The present mode is used by the terminal device to login to the Linux/Unix host, where each serial
port supports up to 8 virtual displays. All the displays support both the Telnet or Fixtty login, and can
choose to login a different host or the same host.
Allows communication with different hosts using the same terminal, enabling the single user, single
terminal and multi- mission operation. The Fixedtty drive is provided for SCO Unix/Linux/Unixware
under fixed port mode (Fixtty). No extra configuration work is required on the host, except the
installation of the drive program. All the configuration is done on the terminal server, through this way
the cleaness of the host system is ensured and the operation of the terminal server won’t be affected
by other accidental actions.
In addition, any name started with “tty” can be assigned to each login terminal by the user under the
fixed port mode, which is more convenient for management and easier for troubleshooting.
★Supports PPP serial mode
All the ports of the UT-66XX series serial server support the PPP protocol, and can be used other as
a PPP server end or as a client end after configuration.
★Features routing function
Allows configuration of multiple static routes inside the server.
★Supports DNS for domain service
Allows query of the required IP address for analysis when connecting a machine.
★Supports ARP
The UT-66XX series serial server supports the standard ARP protocol.
★Parameters of configuration of terminal server
Connection to the terminal server through the web to perform the configuration, by doing this the
user can use the UT-66XX series serial server in work conveniently.
★Supports software update function
The UT-66XX series serial server supports free software update to protect the investment of the
user.
★Supports status monitoring
Not only indicators are provided on the UT-66XX series serial server for the analysis of the working
status of the server, but also statistics of the input/output data of each network port and serial port,
as well as various information, are provided for the analysis of the user.
★Supports MODEM connection
The UT-66XX series serial server supports MODEM plug in/out.

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Security features
The UT-66XX series serial server adopts the following security schemes to ensure the safe use of the
product by the user.
☆Allows setting a server administrator password, where only the system administrator is allowed to
manage the terminal server, eliminating the arbitrary modification to the UT-66XX series serial server
by unauthorized personnel. Thus the security of the configuration of the UT-66XX series serial server
is ensured.
☆Possible to limit the host name the port is about to login, so host users without registration will not be
able to access the server, so the secure access to the server is ensured.
Since the UT☆-66XX series serial server is connected to network during operation, the server is PPP
certified (support PAP and CHAP certification) to ensure the security of the server during the network
access;
☆Possible to pose limits to the hosts or network segments allowed to access the server, the
unauthorized objects not registered in the hosts list and the network segment will not be able to pass
the network access server;
The ex-factory IP address of the UT-66XX series serial server is 192.168.1.125, and the subnet mask is
255.255.255.0
c) Application mode
1. Virtual serial mode
2. Point-to-point mode
3. Point-to-multipoint mode
LAN

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4. Multi-host mode (up to 6 hosts)
Chapter Two Instruction on installation of UT-66XX series serial server
a) Instruction on software installation
1. IP address search and software modification
See the annexes for details
2. Virtual serial software
See the annexes for details
b) Description of LED indicators
Sequence
Model First Second Third Fourth Fifth
UT-6601 Power 10/100M Network
connection
UT-6602 10/100M Network
connection
Power 1 indicator for
serial port
status
2 indicators
for serial port
statuses
UT-6604 10/100M Network
connection
Power
UT-6608 10/100M Network
connection
Power
UT-6616 Power Network
connection
10/100M Network full/half duplex indicator
UT-6632 Power Network
connection
10/100M Network full/half duplex indicator

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c) Definition of pins
1. Definition of serial pins for UT-6601
2.
Definition of serial pins for UT-6602
RJ45
3. Definition of the UT-6604/6608 serial pins
RJ45
4. Definition of the UT-6616/6632 serial pins
PIN
RS-232 RS-485
HALF
RS-485
FULL
RS-422
1 DCD DATA+ TXD+ TXD+
2 RXD DATA- TXD- TXD-
3 TXD RXD+ RXD+
4 DTR RXD- RXD-
5 GND
6 DSR
7 RTS
8 CTS
RJ45
RS-232 RS-485
HALF
RS-485
FULL
RS-422
1 TxD DATA+ TxD+ TxD+
2 RxD DATA- TxD- TxD-
3 RTS RxD+ RxD+
4 CTS RxD- RxD-
5 DSR
6 GND GND GND GND
7 DTR
8 DCD
RJ45
RS-232 RS-485
HALF
RS-485
FULL
RS-422
1 TxD DATA+ TxD+ TxD+
2 RxD DATA- TxD- TxD-
3 RTS RxD+ RxD+
4 CTS RxD- RxD-
5 DSR
6 GND GND GND GND
7 DTR
8 DCD

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RJ45
Chapter Three echnical parameters of UT-66XX series serial server
a) Technical parameters
Product model UT-6601 UT-6602 UT-6604 UT-6608 UT-6616 UT-6632
Number of serial
ports 1 2 4 8 16 32
CPU 32bits 100MHZ
Memory 2M 2M 8M 8M 8M 8M
Baudrate 50-460800bps
Parity bits Nove、
、、
、Odd、
、、
、Even、
、、
、Mark、
、、
、Space
Data bits 5、
、、
、6、
、、
、7、
、、
、8
Stop bits 1、
、、
、1.5、
、、
、2
Flow
control RTS/CTS、
、、
、XON/XOFF
Type DB9/termin
al RJ45
Protection 15KV lightning protection
Serial port
Signal RS232:
::
:DCD/RxD/TxD/DTR/GND/DSR/RTS/CTS、
、、
、RS422:
::
:TXD+/RXD+/TXD-/RXD-/GND、
、、
、
RS485:
::
:Data+/Data-
Rate 10/100M self-adaptive, support manual configuration
Type RJ45
Network
port
Protection 2KV built-in electromagnetic insulation
Protocol ARP、
、、
、IP、
、、
、ICMP、
、、
、UDP、
、、
、TCP、
、、
、PPP、
、、
、HTTP、
、、
、TELNET、
、、
、DNS、
、、
、DHCP、
、、
、PAP、
、、
、CHAP
Software
Virtual COM
Windows NT/2000/XP
Operating
Temperatur
e
-10℃
℃℃
℃————60℃
℃℃
℃
Working
humidity 5%————95%
Environment
Storage
temperature
-20℃
℃℃
℃————85℃
℃℃
℃
RJ4
5
RS-232
RS-485
HALF
RS-485 FULL RS-422
1 TxD RxD+ 1 RxD+ 1
2 RxD
TxD+ 2 TxD+ 2
3 RTS RxD- 3 RxD- 3
4 CTS
TxD- 4 TxD- 4
5 DSR
6 GND GND 6
7 DTR
8 DCD

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Storage
humidity 5%————95%
Certification FCC、
、、
、CE
Power supply DC 5V、
、、
、1A AC 220V
Material Metal housing
Appear
ance
Dimensions
97×65×0.87i
n
113×77×0.9
1in 160×90×1.18in Standard 19 inch, 1U of
height
b)
))
)Product Configuration Table (for one set of equipment)
Configuration
Model
Serial server
host
Power
supply
adapter
Softwar
e
Product manual
and warranty
sheet
RJ45 to DB9 male
cable
UT-6601 (3 in 1) 1 1 DC5V/1A
1 1
UT-6602 (2 channels of
RS232) 1 1 DC5V/1A
1 1 1
UT-6602 (2 channels of
RS485/422) 1 1 DC5V/1A
1 1
UT-6604 (3 in 1) 1 1 DC5V/1A
1 1 1
UT-6608 (3 in 1) 1 1 DC5V/1A
1 1 1
UT-6616 (16 channels of
RS232) 1 AC220V
cable 1 1 1
UT-6616 (16 channels of
RS485/422) 1 AC220V
cable 1 1
UT-6632 (32 channels of
RS232) 1 AC220V
cable 1 1 1
UT-6632 (32 channels of
RS485/422) 1 AC220V
cable 1 1

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Chapter Four: Description of WEB operation of UT-66XX series serial server
a) Server Menu
Server Menu--Server Information (setting of server information)
Server Name Serial server name.
Server Position Serial server position (can be user-defined (such as name of the installation position) for
convenient maintenance).
Ethernet IP Address Serial server internal IP address
Ethernet IP Mask Internal network subnet mask .
Ethernet Mode Network rate can be manually set to 10M or 100M, the default option is auto - detecting the
network rate automatically.
DHCP Enabled Enables the automatic IP configuration.
DHCP CLIENT ID If the Ethernet is to be used as the DHCP client, then this option is to be input to the CLIENT
ID of the DHCP (in hexadecimal format) .
Default Gateway Gateway
Primate DNS Server
The primary DNS server.
Second DNS Server
The secondary DNS server.
CONSOLE Timeout Console time out (access the serial server via the console port)
Boot Host Extension option (starting the host)
Boot File Extension option (import files)
Submit Submit (the above options of the serial ports must be submitted to complete the settings)
b) Serial Port Communication Settings
Serial Port Communication Settings---Port (communication settings of the serial ports)
Baudrate Baudrate of the serial port (should be consistent in value with the baudrate of the serial
device connected )
Type of Connection Type of the serial port (including RS232/485/422)
Data Bits Data bits (The default is 8, and the actual value should be consistent with the device
connected)
Stop Bits Stop bits (The default is 8, and the actual value should be consistent with the device
connected)
Parity Parity bits (Including Nove, Even, Odd, Mark, and Space. The default is N, and the actual

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value should be consistent with the device connected.)
Flow Control Flow control
FIFO First in first out (enabled for default)
Lock Locking configuration (possible to lock the configuration of the port for the convenient
repeated setting in future days)
tXON
tXOFF
TX Empty
Del String
RX Freetime RX idle time
RX Max Length RX maximum length
TX Block Time TX block time
XANY
DTR ON DTR is a hardware based control mode of flow control, where you can decide if it is
necessary to set a data terminal ready signal for you application.
Keepalive Keepalive time (configure the keepalive time of the ports of the terminal server, the range is
between 0-10000s, 0 for no keepalive work)
Baud Adjust Fine adjustment of the baudrate
Advanced Setting Extension options
Submit Submit (to complete the setting, after configuration of the above options you need to click on
the submit button, and then click on “Reset ports”, select “port1” and click on the “Submit”
button to submit)
Apply to all ports Apply to all ports (this option can be checked if all ports are of the same settings)
c) Working mode
TCP realport (TCP/IP virtual serial mode)
TCP realport works in Windows environment to map ports of a serial server as virtual COM ports of the
local host through drive program, enabling the COM based upper end software to use the serial ports just
like real local COM ports without any modification of the software. The drive program supports an
extension of COM1024 for the most. Moreover, each independent port supports multiple sessions (up to
6 connections), which makes the monitoring of the serial devices more flexible and more convenient. In
addition, the multiple connections resource can be used as a connection backup.
Communication
Mode
Operation mode option
Sessions Number of hosts connected to the device (up to six)
Authentication Authentication

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Submit Submit (the above options of the serial ports must be submitted to complete the settings)
Apply to all ports Apply to all ports (this option can be checked if all ports are of the same settings)
Udp realport (UDP virtual serial mode)
Communication
Mode
Oparetion mode option
Host Address Host address
Submit Submit (the above options of the serial ports must be submitted to complete the settings)
Apply to all ports Apply to all ports (this option can be checked if all ports are of the same settings)
TCP/IP socket (WINSOK mode)
Communication
Mode
Working mode option
TCP Data Mode There are two parameters for the TCP data mode: [raw] and [telnet], the first is for fully
transparent transmission, and the second means that the socket data is in accordance with
TELNET and RFC2217 standard. Control code is added to the data received by the server
from the serial ports and then sent to other nodes in the Ethernet through socket.
Local Port Port number (default as 1001, 1002…)
CR As There are four parameters: [none], [cr], [lf], and [cr-lf]. [none] means that the server will not
send an “ENTER” received from a serial port to the Ethernet; [cr] means that the server will
send an “ENTER” received from a serial port to the Ethernet just as it is; [lf] means that the
server will change an “ENTER” received from a serial port to a “NEW LINE” and then send it
to the Ethernet; [cr-lf] means that the server will change an “ENTER” received from a serial
port to an “ENTER” and a “NEW LINE” and then send them to the Ethernet.
LF As There are four parameters: [none], [cr], [lf], and [cr-lf]. [none] means that the server will not
send an “ENTER” received from a serial port to the Ethernet; [cr] means that the server will
send an “ENTER” received from a serial port to the Ethernet just as it is; [lf] means that the
server will change an “ENTER” received from a serial port to a “NEW LINE” and then send it
to the Ethernet; [cr-lf] means that the server will change an “ENTER” received from a serial
port to an “ENTER” and a “NEW LINE” and then send them to the Ethernet.
Sessions Number of hosts connected to the device (up to six)
Strip NULL
Authentication It is possible that the server send a request for authentication when connected, the
connection will be cancelled if the user’s name and the password are incorrect. This

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configuration option has two parameters: [none] and [local]. Note: If [local] is selected for the
authentication, the users should be added correspondingly, and it is possible to set the
operation authority of the users to the serial ports; if no user is added, the [authentication]
set is invalid, which means that the connection will be permitted to be established even the
input user name and password don’t exist.
Auth Prompt If this option is set to yes, a login hint will show up when connecting the server: (Login: and
Password)
SERVER First Server priority status
Used as a TCP client
Peer Host The IP address pointing to the server end
Peer Port The port number pointing to the server end
Connect Issuing a connect includes four situations: [always], [char], [dcdon], and [dsron]:
[always] means that the server starts a connection at power up and reconnects immediately
if the connection is broken;
[char] means that the server starts a connection as soon as the corresponding port receives
the data;
[dcdon] means that the server starts a connection when DCD of the corresponding serial
RS-232 port is set to a high value;
[dsron] means that the server starts a connection when DSR of the corresponding serial
RS-232 port is set to a high value;
Disconnect Issuing a disconnect includes four situations: [none], [dcdoff], [dsroff], and [break]:
[none] means that the server will never try to disconnect;
[dcdoff] means that the server disconnect when DCD of the corresponding serial RS-232
port is set to a lower value from a higher value;
[dsroff] means that the server disconnect when DSR of the corresponding serial RS-232
port is set to a lower value from a higher value;
[break] means that the server disconnect when the corresponding serial RS-232 port
receives a break message.
Freetime Idle time (To set the idle time before automatic disconnection, the server will disconnect if
there is no data transmission in the time period (in second) set. If the value is set to “0”, the
server will never try to disconnect no matter how long the idle time is.)
Multi screens TTY
The server can use this mode as a char terminal, which is common in financial industry. This mode

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supports two protocols: telnet and rtelnet. Telnet doesn’t need any drive program, but the terminal name it
receives when login to the system is not fixed; rtelnet uses drive program to login to the same terminal for
each time, thus the terminal name is fixed.
Communication
Mode
Operation mode
Screens Number of screens (each serial port supports up to 6 screens) (UT-66XX supports
multi-screen switching)
Term Type Terminal type (Here the user can enter the type of the terminal simulation to adapt to the
handling of special characters)
Auto Connect Automatic connection (There are two options: [cr] and [auto], [cr] will connect to the host
when the “ENTER” button on the terminal is pressed, and [auto] will connect to the host at
power up)
Logoff Disconnection conditions (there are four options: [none], [dcdoff], [dsroff], and [break].
[none] means that the server will never try to disconnect; [dcdoff] means that the server
disconnect when DCD of the corresponding serial RS-232 port is set to a lower value from a
higher value; [dsroff] means that the server disconnect when DSR of the corresponding
serial RS-232 port is set to a lower value from a higher value; [break] means that the server
disconnect when the corresponding serial RS-232 port receives a break message.)
Prompt Prompt message (The actions and status of the current connection will be displayed on the
terminal when connection is established between the server and the UNIX host.)
MODEM Mode
MODEM configuration (This option has three parameters: [none], [in] and [out]. [none]:
MODEM control is invalid; [in]: MODEM is waiting for dial in; [out]: MODEM dials out
according to the setting of [Telephone numbers])
Dynamic Dial Dynamic dialing (There are two options. “no” means that the server will only dial the number
provided in [Telephone number 1], when [MODEM mode] is “out”; “yes” means that when
[MODEM mode] is “out”, the server will dial the number provided in [Telephone number 1] at
first. If it can’t be connected, the number in [Telephone number 2], [Telephone number 3],
and [Telephone number 4] will be dialed sequentially until it is connected or the handshaking
with the counterpart MODEM is successful.)
MODEM Init
Command
The Modem initialization command
MODEMDial
Command
The Modem dialing command
Phone Number1 Telephone number 1
Phone Number2 Telephone number 2
Phone Number3 Telephone number 3
Phone Number4 Telephone number 4
Callback To call back.
Callback Phone The callback telephone number.

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PPP dialout
In this mode, each serial port of the server can be used as the dial in/out end of the PPP server, it
supports applications of remote dialing access
Communication
Mode
Operation mode
Peer IP The IP address of the peer (Used as the IP address of the peer serial port after the
connection between the PPP client end and PPP server end is successful. This IP address
is optional, and can be gained through the negotiation with the PPP server end.)
Local IP The local IP address (Used as the IP address of the serial port of the server after the
connection between the PPP client end and PPP server end is successful. This IP address
is optional, and can be assigned by the PPP server end.)
Local Mask The local mask.
Request DNS Request for the DNS server (Whether or not request the IP address of the domain server
during the connection to the server end, Yes for request, No for not request.)
Username The user name to be dialed out (Enter the user name here if authentication is required by
the server end to be connected.)
Password The password to be dialed out (Enter the password here if authentication is required by the
server end to be connected.)
CHAP Needed CHAP is one of the PPP certified protocols. Selecting yes means that this protocol must be
used during connection; selecting no means that it is optional.
Free Time Allowed idle time (The server will disconnect automatically if there is no data transmission in
the time period set after the connection is established. The value range of the option is
between 0-10000 min. Entering 0 or nothing means automatic disconnection is disabled.)
Modem Init Cmd The Modem initialization command (To initial the MODEM connected to this serial port,
typically “at” is used for the client end.)
Modem Dial Cmd The Modem dialing command (What dialing mode the MODEM will use: audio or pulse.
Type “atdt” for audio dialing (which is the most case in practical applications) and “atdp” for
pulse dialing.)
Phone Number1 Dialing out number 1
Phone Number2 Dialing out number 2
Phone Number3 Dialing out number 3

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Phone Number4 Dialing out number 4
CallBack To callback
CallBack Phone The callback telephone number.
Dynamic Dial Dynamic dialing
PPP daemon
In this mode, each serial port of the server can be used as the dial in/out end of the PPP server, it
supports applications of remote dialing access
Communication
Mode
Operation mode
Authentication Authentication mode (Identity authentication is required when accepting the connection
from the client end. There are three options: [none], [pap] and [chap]. None represents for
no authentication.)
Peer IP Address Peer IP address (the IP address assigned to the client end)
Local IPAddress Local IP address
Local IP Mask Subnet mask
Allocate DNS Allocation of DNS server (Whether or not allocate the IP address of the domain server to the
client end during the connection with the client end. Yes for request, No for not request.)
Freetime Allowed idle time (The server will disconnect automatically if there is no data transmission in
the time period set after the connection is established. The value range of the option is
between 0-10000 min. Entering 0 or nothing means automatic disconnection is disabled.)
Modem Init Cmd Modem initialization command
Modem Dial Cmd Modem dialing command
CallBack Callback status.
CallBack Phone The callback telephone number.
CallBack Mode Callback mode
Line printer daemon (Printer mode)

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It is used to connect a printer, and to use the serial server as the printing server. Remote printing is
possible through connecting a printer on a serial or parallel port (connected to a device with large number
of ports) to the server.
Communication
Mode
Operation mode
Sequeue Name Sequence name
Begin Sequeue Begin printing sequence (The string sent by the server to the printer to initialize the printer
before printing the main text.)
End Sequeue End printing sequence (The string sent by the server to the printer after the printing of the
main text is finished.)
CR As There are four parameters: [none], [cr], [lf], and [cr-lf]. [none] means that the server will not
send an “ENTER” received from a serial port to the Ethernet; [cr] means that the server will
send an “ENTER” received from a serial port to the Ethernet just as it is; [lf] means that the
server will change an “ENTER” received from a serial port to a “NEW LINE” and then send it
to the Ethernet; [cr-lf] means that the server will change an “ENTER” received from a serial
port to an “ENTER” and a “NEW LINE” and then send them to the Ethernet.
LF As There are four parameters: [none], [cr], [lf], and [cr-lf]. [none] means that the server will not
send an “ENTER” received from a serial port to the Ethernet; [cr] means that the server will
send an “ENTER” received from a serial port to the Ethernet just as it is; [lf] means that the
server will change an “ENTER” received from a serial port to a “NEW LINE” and then send it
to the Ethernet; [cr-lf] means that the server will change an “ENTER” received from a serial
port to an “ENTER” and a “NEW LINE” and then send them to the Ethernet.
d) Authority Management
Secure Setting Security settings.
IP Access Limit Table
List of IP access limit.
MAC Access Limit
Table
List of MAC access limit.
e) System Status
System Information System information.
Network Interface
Information
Network interface information.
Active Routing
Information
Active routing information.
Serial Port
Information
Serial ports information.
ARP Address Map ARP address mapinformation.

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Information
TCP Socket
Information
TCP socket information.
Active TCP Socket
Information
Active TCP socket information.
UDP Socket
Information
UDP socket information.
f) Miscellaneous
Route Table Routing list.
Host Table Hosts list.
EA-LAN1 Users
Select ports to reset Selection of serial port reset.
Save Configurations
It’s very important to save the settings. Any modification to the WEB need to be saved
before exiting the web page, otherwise the settings will be restored.
Reboot Server Restart the server.
Chapter Five Troubleshooting of UT-66XX series serial server
a) Can’t find the IP address of the serial server after running upgrad.exe
1. First, make sure that the physical connection is normal, the network cable (distinct crossover cable and
straight-through cable) and power supply is connected. Observe the power indicator, the LAN indicator
and the ACT (this lamp is off when the 10M network is connected; and it is only on when the 100M
network is connected.)
2. Make sure that the network adapter is available and can communicate with other local hosts.
3. Turn off any tools or software that would shield broadcast packets (don’t run the system integrated
firewall)
4. If after an abnormal disconnection such as power down during IP configuration through a browser, no
device can be found, reconfigure IP through the console.
b) Unable to open a serial port
1. Make sure the network status is normal and the server can be pinged through.
2. Check operation status to find out if the port is occupied.
3. If the port is occupied, find out if the settings in “COM PORT OVER TCP/IP” are correct through
realport.
4. Delete the corresponding COM port in the registry and remap.
c) Can’t receive/send data
1. Make sure that the serial port can be opened normally
2. Find out if the “TX” value in [System Stats][ Network Interface Information] is increased. If not, check
the connection between the serail port and the upper end network; if TX is increased but the bottom serial
port device dosen’t receive, check the cable.
3. Find out if the “RX” value in [System Stats][ Network Interface Information] is increased. If not, check
the connection cable; if yes, check the connection between the serail port and the upper end network.
d) Forget the password previously set
1. Press the “reset” button and hold for 3 s and then release, the password will be eliminated temporarily.

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However, the password will be recovered up on the reboot after power down.
e) Lousy code received/sent
1. Make sure the cable connection is correct. Specially, problem of parallel cables should be noticed for
our 485 devices.
2. Check if the cable length exceeds the standard distance and the cable quality (increasing the
transceiver or the optical shutter is also applicable)
3. Make sure the baudrate set matches with the bottom end device
4. Find out if it is possible to receive normal data using network or serial port commissioning assistant
without upper end software. If can, the problem might be something with the packing mechanism, set the
length and waiting time for the packing in ” Serial Port Communication Settings”” Advanced Setting”.
f) The serial communication server is used as the dialing server and the connection is
established normally. But it can’t be open by a PC using IE, while inputting the IP in the address
bar will do
1. Whether or not the [Allocate DNS server] in [Specific parameters] of [PPP daemon] of the serial
communication server is “Yes”, and the DNS set in [Server] is valid.
g) The serial communication server is used as a dialing server and the connection is
established normally. But it can’t be open fully or at all when using IE for complicated pages or
downloading of large files
1. Check [Serial ports] in the serial communication settings to make sure that [Flow control] is consistent
with the flow control of the MODEM. Typically, the flow control of the MODEM is achieved through rts/cts
(hardware flow control)
2. The DCE rate for negotiation between MODEMs is too low, redial.
h) Unsuccessful PPP connection
1. Enter into the serial communication server configuration, open [Serial ports] in [Statistics] and find out
if the DCD status is ‘1’ (i.e. if the serial DCD signal of the serial communication server is ‘high’). If not, the
serial communication server will not start PPP
2. Make sure the authentication modes of the client end and the server end are consistent, and the user
name and the password established are matched.
i) Can’t be connected as a TCP server
1. Make sure that there is no other PC connected to the corresponding port of the serial communication
server. To do this, enter into [Statistics] of the serial communication server, and view [Active TCP
information]
2. If [Authentication] in [Specific parameters] is none
If the problem remains unsolved, please contact the manufacturer.

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Chapter Six Accessories
a) Modification of IP address
After the device is connected, start the attached software “upgrade” (as show in the figure
below), select “Server - search all devices” or click on the red circle in the following figure,
and then you can view IP addresses and basic information of all the UT-66XX series
devices connected to the network. Click and select a device, change the IP address
through selecting “Tool - Temporary change ip address”. The IP address should be in the
same network segment of the switch connected to the serial server, for example, if the IP
of the switch is 192.168.1.1, and then the IP address of the server should be
192.168.1.XXX.
b) Creation of virtual serial port
1. Run the virtual serial port setup file “setup.exe”, the “Setup” window will pop up, click “Yes” to go to the
next step.
2. The “Setup-com port over TCP/IP” window pops up, click “Next” to go to the next step

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3. In this window you will be noted about where the virtual serial port software is installed. Click “Next” to
go to the next step
4. The prompt indicates that the installation is to be started. Click “Install” to go to the next step
This manual suits for next models
6
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