Serial-Ethernet Device Server User’s Guide
Index
1. Introduction
………………………………………………………………………………… 3
1.1 Protocol Support
…………………………………………………………………………….
4
1.2 Serial Interface
………………………………………………………………………………
4
1.3 Ethernet Interface……………………………………………………………………………. 5
1.4 LED’s
……………………………………………………………………………………........ 5
2. Unpacking
……………………………………………………………………………………
6
3.
Getting Started …………………………………………………………………………….… 7
3.1 Addresses and Port
Number ………………………………………………………………
7
3.2
Methods of Assigning the IP Address ………………………………………………… 8
3.3
Configuring via Web Browser ………………………………………….……………….. 12
4.
Using a Telnet Connection ………………………………………………………………… 17
4.1
Server Configuration (Network Configuration)
……………………………………………
17
4.2
IP Address …………………………………………………………………………………… 18
4.3
Set Gateway IP Address …………………………………………………………………… 18
4.4
Netmask: Number of Bits for Host Part
…………………………………………………...
18
4.5
Change Telnet configuration password
…………………………………………………...
18
4.6
DHCP Naming
…………………………………………………......................................... 18
5.
Channel 1 Configuration (Serial Port Parameters)
…………........................................
19
5.1
Baudrate ……………………………………………………………………………………… 19
5.2
I/F (Interface) Mode
…………………………………………………………………………
19
5.3
Flow …………………………………………………………………………………………… 20
5.4
Port Number ………………………………………………………………………………… 20
5.5
Connect Mode ………………………………………………………………………………. 21
5.6
Remote IP Address …………………………………………………………………………. 26
5.7
Remote Port …………………………………………………………………………………. 26
5.8
DisConnMode
……………………………………………………………………………….
27
5.9
Flush Mode (Buffer Flushing) ………………………………………………………………. 27
5.10
Pack Control ………………………………………………………………………………. 27
5.11
DisConnTime (Inactivity Timeout) …………………………………………………………. 28
5.12
Send Characters ……………………………………………………………………………. 28
5.13
Telnet Terminal Type ………………………………………………………………………. 28
5.14
Channel (Port) Password
……………………………………………………………………
28
6.
Expert Settings …………………………………………………………………………. …….
28
6.1
TCP Keepalive time in seconds
………………………………………………………. ……. 29
6.2
ARP Cache timeout in seconds
………………………………………………………. ……. 29
7.
Security Settings
……………………………………………………………………………..
29
7.1
Disable SNMP ……………………………………………………………………………….. 29
7.2
SNMP Community Name ……………………………………………………………………. 29
7.3
Disable Telnet Setup ………………………………………………………………………… 30
7.4
Disable TFTP Firmware Upgrade…………………………………………………………… 30
7.5
Disable Port 77FE (Hex) …………………………………………………………………….. 30
7.6
Disable Web Server …………………………………………………………………………. 30
7.7
Disable ECHO Ports …………………………………………………………………………. 30
7.8
Enable Encryption
…………………………………………………………………………….
30
7.9
Enable Enhanced Password…………………………………………………………………. 31
8.
Factory Defaults………………………………………………………………………………. 31
9.
Exit Configuration Mode……………………………………………………………………… 31
1. Introduction
The eCOV-115 device server connects serial devices such as those listed
below to
Ethernet networks using the IP protocol family.
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ATM Machines
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CNC Controllers
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Data Collection Devices
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Universal Power Supply (UPS) Management Units
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Telecommunications Equipment
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Data Display Devices
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Security Alarms and Access Control Devices
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Handheld Instruments
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Modems
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Time/Attendance Clocks and Terminals
The eCOV-115 connects devices through a TCP data channel or through a Telnet
connection to computers or another Device Server. Datagrams can be sent by
UDP.
The eCOV-115 contains a web [http] server that allows presentation of custom
content and can be easily configured through the server. The eCOV-115 has 3 programmable IO pins
that can be used to monitor or control attached devices.
1.1 Protocol
Support
The eCOV-115 uses the Internet Protocol (IP) for network communications and
the
Transmission Control Protocol (TCP) to assure that no data is lost or
duplicated, and
that everything sent to the connection arrives correctly at the target.
Other supported protocols are listed below:
ARP, UDP, TCP, ICMP, Telnet, TFTP, AutoIP, DHCP, HTTP, and SNMP for network
communications and management. TCP, UDP, and Telnet for connections to the
serial port.
TFTP for firmware and web page updates.
IP for addressing, routing, and data block handling over the network. User
Datagram Protocol (UDP) for typical datagram applications in which devices
interact with other devices without maintaining a point-to-point connection.
SMTP for e-mail transmission.
1.2 Serial
Interface
The unit has a serial port that supports RS-232 serial standards (software
selectable) up to 230Kbps. The serial interface also provides the +3.3V
power, ground, and external reset signals.
Table 1 - Serial Interface Signals
Signal Name | eCOV-115 Pin# | Primary Function |
GND | 5 | Circuit Ground |
VCC | 9 | +3.3V DC Power On |
RX | 2 | Serial Data IN |
TX | 3 | Serial Data OUT |
CTS | 8 | Can be configured as: Flow Control – Connects to DCD of attached DTE device Programmable Digital input or output. |
RTS | 7 | Can be configured as: Modem Control – Connects to DCD of attached DTE device Programmable Digital input or output. |
Not Used | 1, 4, 6 | (Pin#1 can be used for custom pinout) |
The Ethernet interface mechanics, RJ-45 connector, and Ethernet status LEDs
are all integrated into the device server shell.
Table 2 - Ethernet Interface Signals
The device contains the following LEDs:
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10 Mbps Link/Activity (Bi-color, Left LED)
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100 Mbps Link/Activity (Bi-color, Right LED)
LED Functions
2. Unpacking
1. eCOV-115
2. 3.3V DC Power Adapter
3.
RS
4. IBM CAT5 Ethernet Cable (Non-Crossover) for testing and configuration purposes.
This chapter covers the required steps to get the ECOV-115 device server
on-line and working. There are two basic methods used to log into the Device
Server and setup the IP address:
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It is important to consider the following points before logging into and
configuring the eCOV-115:
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The eCOV-115 IP address must be configured before a network connection is
available.
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Only one person at a time may be logged into the network port. This
eliminates the possibility of several people simultaneously attempting to
configure the Device Server.
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Network port logins can be disabled. The system manager will not be able to
access the unit. This port can also be password protected.
The Ethernet address is also referred to as the hardware address or the MAC
address. The first three bytes of the Ethernet Address are fixed and read
00-20
00-20
Every device connected to an IP network must have a unique IP address. This
address is used to reference the specific unit.
Every TCP connection and every UDP datagram is defined by a destination IP
address and a port number. For example, a Telnet application commonly uses
port number 23. A port number is similar to an extension on a PBX system.
The unit 's serial channel (port) can be associated with a specific TCP/UDP
port number. Port number 9999 is reserved for access to the unit's Setup
(configuration) Mode window.
3.2
Methods of Assigning the IP Address
The factory default IP address is
192.168.100.253
you can simply attach the eCOV-115 directly to your PC’s LAN port via a
piece of IBM CAT5 crossover cable and type the above mentioned IP address
into your web browser’s URL box to configure basic settings via browser
setup page. (Note: the host’s IP
address and Subnet Mask must be assigned to 192.168.100.X/255.255.255.0
range)
Otherwise, the unit's IP address must be configured before a network
connection is available. You have
several options for assigning an IP to your unit.
DHCP : A DHCP server automatically assigns the IP address and network
ARP and Telnet: You manually assign the IP address and other network settings at a command prompt using a UNIX or Windows-based system. Only one person at a time can be logged into the configuration port (port 9999) this eliminates the possibility of several people simultaneously attempting to configure the unit.
These methods are described in the remaining sections of this chapter.
Note:
In most installations, a fixed IP address is desirable. The systems
administrator generally provides the IP address. Obtain the following
information before starting to set up your unit:
IP Address: _______ _______ _______ _______
Subnet Mask: _______ _______ _______ _______
Gateway: _______ _______ _______ _______
DHCP
The unit ships with a default IP address of
AutoIP
The unit ships with a default IP address of
192.168.100.253 though, however, if you manually assign the eCOV
If your unit cannot find a DHCP server, and you have not manually assigned
an IP address to it, the unit automatically selects an address from the
AutoIP reserved range. Then, your unit sends out a (ARP) request to other
nodes on the same network to see whether the selected address is being used.
If the selected address is not in use, then the unit uses it for local
subnet communication.
If another device is using the selected IP address, the unit selects another
address from the AutoIP range and reboots itself. After reboot, the unit
sends out another ARP request to see if the selected address is in use, and
so on.
AutoIP is not intended to replace DHCP. The unit will continue to look for a
DHCP server on the network. If a DHCP server is found, the unit will switch
to the DHCP server-provided address and reboot.
Note:
1.
If a DHCP server is found, but it denies the request for an IP address, the
unit does not attach to the network, but waits and retries.
AutoIP can be disabled by setting the unit’s IP address to
2.
Since the AutoIP will give the eCOV
The unit’s IP address must be configured before a network connection is
available. If the unit has no IP address, you can use Address Resolution
Protocol (ARP) method from UNIX and Windows-based systems to assign a
temporary IP address. If you want to initially configure the unit through
the network, follow these steps:
1. On a UNIX or Windows-based host, create an entry in the host's ARP table
using the intended IP address and the hardware address of the unit.
arp -s 192.168.100.253 00:20:
Note:
For the ARP command to work on Windows 95, the ARP table on the PC must have
at least one IP address defined other than its own.
2. If you are using Windows 95, type ARP -A at the DOS command prompt to
verify that there is at least one entry in the ARP table. If the local
machine is the only entry, ping another IP address on your network to build
a new entry in the ARP table; the IP address must be a host other than the
machine on which you are working. Once there is at least one additional
entry in the ARP table, use the following command to ARP an IP address to
the unit:
arp -s 192.168.100.253 00-20
3. Open a Telnet connection to port 1. The connection will fail quickly, but
the unit will temporarily change its IP address to the one designated in
this step.
telnet 192.168.100.253 1
4. Finally, open a Telnet connection to port 9999, and press Enter within
three seconds to go into Setup Mode. If you wait longer than three seconds,
the unit will reboot.
telnet 192.168.100.253 9999
5. Set all required parameters
Note: The IP address you just set is temporary and will revert to the
default value when the unit’s power is reset unless you log into the unit
and store the changes permanently.
If you want to initially configure the unit through a serial connection,
follow these steps:
1. Power on and attach the eCOV-115 directly to your PC’s LAN card via a
piece of IBM CAT5 crossover Ethernet cable and Enter the web browser setup
page by type in the device’s IP address
(default is 192.168.100.253) click the following links and set your default password:
2. Connect a console terminal or PC running a terminal emulation program to
your unit's serial port. The default serial port settings are 9600 baud, 8
bits, no parity,
1 stop bit, no flow control.
3. To enter Setup Mode, cycle the unit's power (power off and back on).
After power-up, the self-test begins.
You have one second
to enter your saved passwords
3. At this point, the screen display is the same as when you use a Telnet
connection as shown below:
Change
Setup:
0 Server
configurations
1
Channel 1 configuration
3 E-mail
settings
5 Expert
settings
6
Securities
7
Factory defaults
8 Exit
without save
9 Save
and exit your choice?
3.3
Configuring via Web Browser
Open your JAVA enabled web browser and enter the IP address (default 192.168.100.253; please first configure
your PC’s IP address to the same network range of
192.168.100.x/255.255.255.0 before you doing so). The Web Manager page will
display as shown below:
You can
start a web browser for configuration by opening your JAVA enabled web
browser and entering the IP address.
Web
Manager has the following buttons:
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Unit
Configuration
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Server
Properties
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Port
Properties
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Factory
Settings1
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Update
Settings
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Channel1
1. Use
the menu (pushbuttons) to navigate to sub pages where you can configure
server settings. See explanations of the configuration parameters later in
this chapter.
2. When
you are finished, click the
Update Settings
button to save your settings.