1. Uniflair
pCOWeb
Ethernet interface card

2. Introduction
pCOWeb is an ethernet card that interfaces the latter with the emerging protocols (BACnet and SNMP), that are the emerging protocols in HVAC world, and are based on the Ethernet standard.

3. Devices: where it can work
pCOc
pCO1
pCO2
pCO3
upCOxs
pCOb

4. Features and Options
The board has a great memory capacity (8 MG flash, where 4 MG for the
user pages).
The operating system is Linux based
pCOWeb permits the connection to the following nets:
Local LAN nets o Internet: thanks to their web-server capacity, the user can download via FTP the HTML pages, and using a browser, can see/modify the variables sent from the pCO*.
SNMP nets v.1, v.2c, v.3
BACnet Ethernet ISO over ; BACnet /IP; BACnet MS/TP
The parameters configuration can be done autmatically in case of DHCP servers

5. Features and Options
It allows to access to the variables of the controller (pCOx) through a
common Ethernet LAN.
• Board features
• Power by pCO
• ARM7 74MHZ
• 16MB RAM, 8MB flash
• Linux
• Protocols:
• HTTP (web pages 4MB)
• SNMP (Simple Network Management Protocol)
• BACnet (BACnet over IP and BACnet over Ethernet)
• FTP server, FTP client

6. Functions available
• WEB server: used to check or change the operating status of the pCO
controller using a remote computer running, for example, Internet Explorer™ or
Mozilla Firefox; dynamic web pages developed by the user can be added;
supports CGI technology; supports protection for accessing web pages;
• Logger: pCOWeb can record the values of some of the pCO controller variables in a file on its non-volatile memory; the file can then be downloaded to a PC using Internet Explorer™;
• Graphs: the trends over time of the data saved with the Logger function can be viewed on graphs;
• pCOWeb can send s when programmable events occur on the pCO controller
(activation of alarms, exceeding of thresholds) or at set time intervals; a file in XML format can
be attached containing the values of the variables;
• FTP PUSH: pCOWeb can send a file in XML format containing values of the variables to a suitably configured computer; the send operations can be programmed in the same way as for send the messages (upon event or at set times); the file is sent using the FTP protocol;

7. Functions available
• SNMPv1 & v2: to access pCOWeb from a computer using supervision software based on the SNMP
protocol. pCOWeb can send programmable enterprise TRAP or INFORM packets for alarm
notifications;
• BACnet Ethernet ISO over : to access the pCO controller using supervision software
based on the BACnet Ethernet protocol;
• BACnet/IP (Addendum A/Annex J): for access using supervision software based on the BACnet/IP
protocol;
• FTP server: used to copy data files or web pages from/to pCOWeb in a simple manner, using
programs based on dragging icons from one window to another;
• DHCP: used to connect pCOWeb to a local network using the method of automatic addresses
assignment by a central server, rather than statically setting the addresses on the individual devices;
DHCP is active by default;
• Plugins: used to add additional applications developed by CAREL or by the user in script or compiled
format;
• Firmware update: the pCOWeb firmware can be updated from a computer.

8. The ethernet line and the
pCOWeb Installation

9. Example of network connection
pCOWeb transforms the unit in a
PC with its own IP number
Computers connected in
the Ethernet company net
Thanks to the switch all the devices can be connected to the same net
Here an example of pCOWeb connection to a generic ethernet net
Thanks to the internet connection,
and to the web-server function, pCOWeb
can answer inserting the IP address also from
a remote computer

10. Buttons and leds Push button: if pressed at the appropriate
moment: pCOWeb will use the
IP address
Status LED: during the correct functioning
it must blink fast Green-Off-Green-Off (it’s
transmitting
Status Ethernet: if green the
ethernet net is ok, if red it means
no phisical connection is available
It’s the RJ45 ethernet connector.
For local connection to a PC, it’s
necessary a cross cable

11. Leds meanings
Status LED displays information on the communication status between pCOWeb and
the pCO, and must normally be green and flash around 3 times a second;
Ethernet LED: displays the status of the physical network connection (Ethernet connection signals), regardless of whether the network parameters are correct; usually this must be green and flash when the data transits.

12. pCO* installation This is the Supervisory System slot for the card
This is the MAC address, also
called “phisical address”, it’s a
48 bit code that identifies all
ethernet cards producted in the
world.
M: media
A: access
C: control

13. First time installation Connecting pCOWeb directly to the pc
The steps to be completed are as follows:
Configuration of the PC for direct connection to pCOWeb.
Connection and start-up of pCOWeb to check
correct installation.
Activation of the factory network settings (button).
Access to the pCOWeb from the PC.
It’s mandatory to use a
CROSSOVER cable for the local
connection

14. First time installation Connecting pCOWeb directly to the pc
Configuration of the PC for direct connection to pCOWeb
In order to access inside the Ethernet card
memory, it’s important to disable the firewall
which is integrated inside the Windows operating
system.

15. First time installation Connecting pCOWeb directly to the pc
Configuration of the PC for direct connection to pCOWeb
It’s important for a correct communication that both devices have the same aligned settings.
As the pCOWeb default settings can only be changed once the connection has been established with the PC, when first accessing the device the personal computer will need to be configured to adapt it to the pCOWeb default settings.
The personal computer must be set
not to use the DHCP, but rather the
following IP address:
The Subnet mask field also needs
to be set:
the Gateway is not required

16. First time installation Connecting pCOWeb directly to the pc
Configuration of the PC for direct connection to pCOWeb
The proxy server must be disabled
1. Open the Windows “Control panel”.
2. Double click “Internet options”;
3. Click “Connections”. Another window (Figure 3.d - right)
will be displayed.
4. Click “LAN settings…”
5. Note down the settings.
6. Disable the proxy server.
7. Close the windows using the OK button.

17. First time installation Connecting pCOWeb directly to the pc
Connection and start-up of pCOWeb / activation factory settings
1. Connect pCOWeb to the Ethernet connector on the PC using a crossover cable
2. Immediately after reboot, as soon as the Status LED remains on steady GREEN, to activate the factory settings rather than the user settings, hold the button;
3. after around 20 seconds the Status LED, due to the button being pressed, will turn RED and flash slowly 3 times; the button must be released before then end of the 3 flashes;
4. once the red flashes have terminated, the Status LED will turn GREEN and, if the procedure has been performed correctly, immediately after the Status LED will confirm the pressing and release of the button by flashing quickly 3 times RED, and then will come on steady GREEN again for around one minute;
5. once the start-up phase has been completed, the Status LED will start flashing

18. First time installation
Connecting pCOWeb directly to the pc
Pay attention:

19. Access to the pCOWeb from the PC.
First time installation
Connecting pCOWeb directly to the pc
Access to the pCOWeb from the PC.
On the PC open Internet Explorer; in the address field enter the following number, including the dots:
then press ENTER.
IMPORTANT Before pressing ENTER wait for pCOWeb to complete the start-up phase (check that the Status LED is flashing normally), otherwise the required web pages will not be sent to the PC.
The pCOWeb main page “index.html” will be displayed

20. First time installation Connecting pCOWeb directly to the pc
This is the factory IP address, and the page is the
default page already installed in the card

21. First time installation Connecting pCOWeb directly to the pc
pCOWeb features an FTP server that is used to access the user memory and load or retrieve files, for example custom HTML pages, configuration files, log files. To use this function, the PC should be installed with an FTP client
New remote browser
Information like shown on picture (in this case )
Once having selected the OK button, the contents
of the user memory will be displayed (path
usr/local/root/flash/http/)

22. First time installation Connecting pCOWeb directly to the pc
3. New local browser to display the hard disk content
Now the software is ready to transfer the HTML pages from the folder of your computer to
The memory of the pCOWeb (4 Mb free).

23. First time installation
Connecting pCOWeb directly to the pc

24. First time installation Connecting pCOWeb directly to the pc
Now the pCOWeb is ready to function with the Uniflair html customised pages

25. First time installation Connecting pCOWeb directly to the pc
Pay attention that if something is wrong, you shoud check:
The serial speed on the user terminal must be 19200
The firewalls must be disabled
The proxy server must be disabled
To access in the pCOWeb configuration: admin & fadmin
To access via FTP: httpadmin & fhttpadmin
The customised pages must be inserted inside: usr/local/root/flash/http
To access with the computer to the pCOWeb you need to use a CROSS cable
After Sales Team