HMS Networks Intesis BACnet, Руководство пользователя, Страница: 37 / 46

Intesis
TM
BACnet Server
– PROFINET
User Manual r1.0 eng
© HMS Industrial Networks S.L.U - All rights reserved
This information is subject to change without notice
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s
://www.intesis.com
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Powering the device
A power supply working with any of the voltage range allowed is needed (check section 10). Once connected the
RUN led (Figure above) will turn on.
WARNING! In order to avoid earth loops that can damage the gateway and/or any other equipment connected to it,
we strongly recommend:
•
The use of DC power supplies, floating or with the negative terminal connected to earth. Never use a
DC power supply with the positive terminal connected to earth .
Connection to BACnet
7.2.1 BACnet IP
Connect the communication cable coming from the network hub or switch to the ETH port (Figure above) of Intesis.
The cable to be used shall be a straight Ethernet UTP/FTP CAT5 cable
In case there is no response from the BACnet devices to the frames sent by Intesis, check that they are operative
and reachable from the network connection used by Intesis. Check the Intesis Ethernet interface sending
Pings to its
IP address using a PC connected to the same Ethernet network.
Check as well with the network admin that there are no limitations regarding UDP communication or ports blocked.
7.2.2 BACnet MSTP
Connect the EIA485 bus to connectors A4 (B+), A3 (A-) and A2
(SNGD) of gateway’s PortA. Respect the polarity.
Remember the characteristics of the standard EIA485 bus: maximum distance of 1200 meters, maximum 32 devices
connected to the bus,
and in each end of the bus it must be a termination resistor of 120 Ω. The gateway has an
internal bus biasing circuit that incorporates the termination resistor. If you install the gateway in one of the ends of
the bus, then do not install an additional termination resistor in that end.
SW1:
ON:
120 Ω termination active
OFF:
120 Ω termination inactive
SW2-3:
ON: Polarization active
OFF: Polarization inactive
If the gateway is installed in one bus end make sure that termination is active.
BACnet IP connection using switch/hub and straight cable
BACnet IP connection without switch/hub and crossed cable
Ethernet Crossed
Ethernet straight