Powering The Device; Connection To Knx; Connection To Modbus; Modbus Rtu - HMS Networks Intesis KNX User Manual

KNX – Modbus Master
TM
Intesis

Powering the device

Power is supplied by power supply present in the KNX network (see section 4.2).

Connection to KNX

Connect the communication cable coming from the KNX network to the KNX Port (Figure above) of Intesis. Respect
the polarity.
In case there is no response from the KNX installation or KNX devices to the frames sent by Intesis, check that they
are operative and reachable from the network connection where the Intesis is located.
Check as well if there is a line coupler that it is not filtering the telegrams from/to the Intesis.

Connection to Modbus

4.3.1 Modbus RTU

Connect the communication cable coming from the Modbus network to the port marked as Port A of Intesis. Connect
the EIA485 bus to connectors A2 (A-), A3 (B+) and A1 (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, bus polarization 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.
IMPORTANT: If the INKNXMBM1000100 gateway is not placed at one
end of the Modbus channel, the terminal resistor should be deactivated.
Remove Jumper 1 to deactivate the 120 Ω terminal resistor.
The bus should be polarized only in one location on the line. The
INKNXMBM1000100 incorporates 2 jumpers to introduce polarization
to the line. It is recommended to keep polarization in the master only. If
other device is polarized, remove jumpers 2 and 3 to deactivate
polarization in the gateway.
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This information is subject to change without notice
User Manual r1.0 eng
URL https://www.intesis.com
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