Rev.01 03-27-17
Page 39 of 67
Compu-Aire
The connection with the RS485 network is carried out by means of the plug-in terminal
connector on the card Pin-wiring of the connector is stamped on the card. If the card is placed
in the last position of the supervision serial line,
pins 2 and 3, you must connect a 120 Ω
- 1/4 W
end line resistors.
Table 7 - Modbus card installation
Warning
When handling the card, please follow the advice below. Electrical damage may occur to the
electronic components as a result of electrostatic discharges from the operator. Suitable
precautions must be taken when handling these components.
•
Before using any electronic component or card, ground yourself (not touching the card
does not prevent a spike, as static electricity can produce a 10000V spike discharge
which can form an arc of about 1cm)
•
All components must be kept inside their original package as long as possible. If
necessary, take the board from its package and place it into an antistatic package
without touching the back of the board with your hands
•
Absolutely avoid non-antistatic plastic bags, polystyrene or sponge.
•
Do not pass the card directly to other operators (to prevent from electrostatic induction
and discharges).
