Comnet CNFE2MC2C/M User manual

INSTALLATION AND OPERATION MANUAL
CNFE2MC2C[/M]
10/100MBPS ETHERNET ELECTRICAL TO OPTICAL
MEDIA CONVERTER WITH CONTACT CLOSURE RELAY
v1.0 Jan 2012
The ComNet™ CNFE2MC2C[/M] Ethernet 10/100Mbps Ethernet media converter is
designed to transmit and receive 10/100 Mbps data and bi-directional contact relay
over multimode or single mode optical fiber using sold-separately Small Form-Factor
Pluggable (SFP) modules to select distance and connector type. The electrical interface
will Auto-Negotiate to a 10 Mbps, or 100 Mbps Ethernet rate without any adjustments.
The optical interface operates at a 100 Mbps Ethernet rate. It can be one-to-one
mapped over Ethernet or controlled via a PC. Included is a driver that allows the
CNFE2MC2C[/M] to read or write contact information from a PC-based application.
A software utility allows customers to search for this device when installed on the
network. The CNFE2MC2C[/M] supports Windows® Discovery.
Open source com0com TCP/IP protocol is supported for any customer PC applications
to communicate with the units over the Ethernet. The software utility allows customers
to create virtual com ports for each module installed on the same subnet.
These media converters are environmentally hardened to operate in extreme
temperatures. LED indicators are provided to determine equipment operating status.
The CNFE2MC2C[/M] has a normally-open Fiber optic link alarm relay output.
The CNFE2MC2C[/M] small package size allows the unit to be installed in those
locations where space is at a premium, either wall or rack-mounted, or may be DIN-rail
mounted by the addition of ComNet model DINBKT1 adaptor plate.

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Contents
Hardware description 3
Assign IP Address to a Module 5
Using Module as Remote Contact over Ethernet 12
Install ComNet Software Utilities 13
Install the com2com 13
Install the com2tcp 17
Install ComNet Module Configuration software 18
Using the Module through a Virtual COM port (VCP) 20
Manual VCP Configuration 23
Verify VCP Operation 25
Using TeraTerm Telnet Connection 26
Using Windows UPnP to Discover
Your Contact over Ethernet modules 27

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Hardware description
The ComNet™ CNFE2MC2C[/M] contact over Ethernet module supports up to 2 bi-directional
contact closures over Cat5/6 cable, or 1 or 2 optical fibers. All configurations are done through
its web server. The CNFE2MC2C[/M] has two contact inputs and two contact outputs, which
communicate through the network. Distances depend on which SFP (Small Form Pluggable)
module is used.
Mechanical Drawing of CNFE2MC2C/M MODULE
I
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Mechanical Drawing of CNFE2MC2C MODULE

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The contact connector pin-out is as below:
CNFE2MC2C[/M] Module Input/Output Mapping

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Assign IP Address to a Module
A unique IP address has to be assigned to each contact over Ethernet application. You
can connect one at a time to change the default IP address. The default IP address of the
CNFE2MC2C[/M] is: 192.168.10.1.
Connect the module on to your local Ethernet network that your PC is connected to, as Figure 1
below, and power on the unit.
Figure 1 – Local Ethernet Application Diagram
Following the steps below to set up your PC IP address to the same subnet as the modules:
»Disable the machine’s wireless network connection and any other internet connections
that could interfere with the network being created. Select the Internet Protocol (TCP/
IP) connection within the Local Area Connection Properties from start, Control Panel, and
Network Connections. Then click Properties.
Figure 2 – Local Area Connection Properties Dialog Box

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»Next, manually set your PC IP address to 192.168.10.100 and your subnet mask to
255.255.255.0, as shown below.
Figure 3 – Internet Protocol (TCP/IP) Properties Dialog Box
»Click OK to finish the setting.
»Open the browser on your PC, and type in 192.168.10.100 to reach the Media Converter Log In
page (Figure 4).
»The default User Name and Password are both admin. Log in to the Media Converter Home
Page (Figure 5) as shown.

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Figure 4 – CNFE2MC2C[/M] Log in Page

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Figure 5 – CNFE2MC2C[/M] Home Page
»Click on the Configuration link on the left of the screen. Change the IP address to an IP
address with subnet appropriate for your network. In the following examples an IP address in
subnet 192.168.10.xxx will be used. Configure the IP address to 192.168.10.2 as shown in the
Module Configuration Page.
»Click OK.

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Figure 6 – CNFE2MC2C[/M] Configuration Page
»Log in to the module again using the new IP address 192.168.10.2. If an IP address in a
different subnet was used, be sure to change the PC’s network address to an IP address in the
appropriate subnet.

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»Change Contact input/output settings as shown in Table 1.
Contact Input Contact Output
Local Network Port Number 23 26
Remote Network Port Number 26
Network Mode Server Client
Network Protocol TCP/IP TCP/IP
Server IP 192.168.10.1
TCP/IP Timeout 0 0
Table 1 – Contact Input/Output Settings
»Save the configuration changes. Connect this unit and another unit with default configurations
to your local network as shown in Figure 10. The contacts will be linked between the units
through the network.
Figure 7 – CNFE2MC2C[/M] Settings Page in Client Mode

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Figure 8 – CNFE2MC2C[/M] Settings Page in Server Mode
Figure 9 – CNFE2MC2C[/M] Settings Page after Changes

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Using Module as Remote Contact over Ethernet
Figure 10 – Remote contact input
To use the CNFE2MC2C[/M] as a remote contact input or contact output from a PC, some
software utilities need to be installed. Refer to following instructions to install all the utilities.

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Install ComNet Software Utilities
Following the steps below to install all the utilities from the CD comes with the contact over
Ethernet module.
Install the com2com
Com0com is an open source virtual serial port driver for Windows. Once installed it will configure
one or more pairs of virtual COM ports each time Windows starts.
»Insert the ComNet Contact over Ethernet module Documentation and Software CD into the
CD-ROM drive of your computer. Use Windows Explorer or other browser to open directory
com0com-2.2.1.0\. Double click on the file setup. This will start the installation process with the
following dialog.
Figure 11 – com0com Setup Wizard
»Click Next.

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Figure 12 – com0com Setup Wizard, License Agreement
»Click I Agree.
Figure 13 – com0com Setup Wizard, Component Selection
»Leave the Component setup at the default settings. Click Next.

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Figure 14 – com0com Setup Wizard, Install Location
»Choose the Install Location. Click Install.
Figure 15 – com0com Setup Wizard, Installation Progress
»Installation will complete. When installation is done, click Next.

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Figure 16 – com0com Setup Wizard, Installation Complete
»Click Finish.
»The Windows New Hardware Wizard will now run automatically for each of the two new Virtual
COM ports. Please complete the following steps twice.
›Windows will detect the new Com port. When the New Hardware Wizard runs, select No, not
this time and click Next.
›Select Install the software automatically. Click Next.
›When the New Hardware Wizard completes, click Finish.
›Repeat for the second half of the Virtual Com port pair. Com0com has now created virtual
Com ports CNCA0 and CNCB0. These ports will be visible to Windows serial applications
such as HyperTerminal or TeraTerm, which will be installed later. The port names can be
change by running the ComNet Contact over Ethernet module Configuration application,
which will be installed next.

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Install the com2tcp
Com2tcp is an open-source project used in conjunction with com0com to redirect data traffic
from a virtual COM port on the PC to a telnet server or client on the Ethernet network.
»To install com2tcp, simply copy com2tcp.exe from CD to the directory of
C:\Program Files\com0com.
»The application will be linked to ComNet Contact over Ethernet module Configuration
application when you start the application the first time.
»Install the freeware TeraTerm
»Go to directory \TeraTerm on the ComNet Contact over Ethernet module Documentation and
Software CD. Double click on the application file setup.exe.
»Follow the instruction to finish the installation. By default, the application will be installed in the
directory C:\Program Files\TTERMRO\. You can either make a short cut of ttermpro.exe and
copy it to your desktop for convenience, or start the application from Windows startup menu.

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Install ComNet Module Configuration software
»Create a directory comnet under your C: drive. Simply copy the application cns2econf.exe on
the ComNet Contact over Ethernet module Documentation and Software CD to C:\comnet\.
You can make an Windows application shortcut of cns2econf.exe, and move it the your
desktop.
If you start the cns2econf application for first time, the following screen will appear.
Figure 17 – Software Not Found Dialog Box
»Click Yes.
Figure 18 – Locating the com2tcp executable
»Browse to C:\Program Files\com0com, and select com2tcp.exe Click Open.

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Figure 19 – Main ComNet Contact over Ethernet module Configuration application window
This is the Main ComNet contact over Ethernet module configuration application window you will
see when you start the application next time. Wait approximately 30 seconds for the “Contact over
Ethernet Modules:” window to list the units you have connected to your local Ethernet network, as
shown above. Make sure every module has been configured with its unique IP address.

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Using the Module through a Virtual COM port (VCP)
The ComNet Contact over Ethernet module Configuration application offers easy creation and
modification of VCP connections using a single application. Such connections contain several
components:
»The legacy serial application connects to a virtual COM port on the PC. This port is one
of a pair created using com0com. From within the ComNet Contact over Ethernet module
Configuration application you can create new port pairs and edit the names of existing ports to
cater to serial applications that do not understand the default CNCA/CNCB naming convention
used by com0com.
»The second port in the pair is opened by com2tcp, which creates a telnet connection to the
remote contact over Ethernet module over Ethernet. The Configuration application lists all
contact over Ethernet modules it finds and offers a convenient method for accessing their web-
based configuration pages.
»The Host PC connects to the remote contact over Ethernet modules, as shown in Figure 20.
Connection Creation
Figure 20 – Connection creation
The ComNet Contact over Ethernet module Configuration application gathers the information
necessary for creating these connections using com0com and UPnP and then saves entries in the
system registry.