Rev.01 03-27-17
Page 48 of 67
Compu-Aire
10.3.8
CGI script
CGI scripts can be written in bash language or compiled languages. These must have the .cgi
extension and must reside in the http/usr-cgi directory. As for the HTML pages, these files must
also have the properties correctly set and enabled. IMPORTANT: It is recommended to click on
the “Adjust HTML pages attributes” link whenever modifying one or more .cgi scripts.
10.3.9
SNMP
PCOWeb is able to communicate using the SNMP protocol (v1 & v2c). It therefore acts as a
gateway between the CAREL proprietary protocol and SNMP. The information available via
SNMP relates to all the data sent to the supervisors by the application loaded on the controller.
PCOWeb manages some standard traps and allows a trap to be defined for each digital variable
on the controller. The parameters relating to the management of the SNMP protocol can be set
using the administrator configuration pages.
10.3.10
BACnet
PCOWeb is able to communicate using the BACnet protocol over Ethernet:
•
ISO8802-2 over 8802-3;
•
BACnet/IP.
It acts as a gateway between the controller proprietary protocol and BACnet. The information
transferred involves all the data sent to the supervisor by the application loaded on the
controller.
The parameters relating to the management of the BACnet protocol are set using the
administrator configuration pages.
10.3.11
WARNINGS
Precautions when handling the board!
The electrical damage that occurs to electronic components is almost always due to electrostatic
discharges caused by the operator. Consequently, suitable precautions must be taken when
handling these components, in particular:
•
Before handling any electronic component or board, touch an earthed object (avoiding
contact with a component is not sufficient, as a 10,000 V discharge, a voltage that can
easily be reached by static electricity, creates an arc of around 1 cm);
•
The materials must remain as long as possible inside their original packages. If
necessary, remove the board from the packing and then place the product in antistatic
packaging without touching the sides of the board containing the electronic
components;
•
Always avoid using plastic, polystyrene or non-antistatic materials;
•
Always avoid passing the board between operators (to avoid the phenomena of
electrostatic induction and consequent discharges).
