HMS Networks Intesis IN703DAL0640000 User Manual page 16

Connection
NOTE
Some devices detect the difference automatically and adjust themselves.
NOTE
When commissioning the gateway for the first time, DHCP will be enabled for 30 seconds. During
that time, if there is a DHCP server, an IP address will be automatically assigned to the gateway. If
there is no DHCP, you can type an IP address of your choice. After that time, the default IP address
192.168.100.246 will be automatically set.
IMPORTANT
If communicating through the LAN of the building, contact the network administrator and make sure
traffic on the used port is allowed through all LAN paths.
For Modbus RTU:
NOTE
You can use either EIA-485 or EIA-232 Port B connectors for this kind of connection. See
Connectors.
Using the EIA-485 connector:
Connect the Modbus RTU communication cable to the gateway's EIA-485 connector of Port B.
The connector for the EIA-485 bus is a green pluggable terminal block labeled B1, B2, and B3.
• B1: A+
• B2: B-
• SG: Signal ground
IMPORTANT
Observe polarity.
IMPORTANT
Remember the characteristics of the standard EIA-485 bus:
• Maximum distance of 1200 meters (0.75 miles).
• Maximum of 32 devices connected to the bus.
• A 120 ohms (Ω) termination resistor is needed at each end of the bus. The gateway has an internal
bus biasing circuit already incorporating the termination resistor. It can be enabled using the DIP
switch block (SW A) dedicated to the EIA-485 port:
Position 1
– ON: 120 Ω termination active.
– OFF: 120 Ω termination inactive.
Positions 2 and 3
– ON: Polarization active.
– OFF: Polarization inactive.
For further details, see
USER MANUAL Version 1.0.2
Intesis DALI-2 Protocol Translator with Serial and IP Support - 1 DALI
DIP Switches (page 16).
Channel
Gateway
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