Connection Procedure And Dip Switch Setting - HMS Networks Intesis INKNXMBM1000200 User Manual

Connection Procedure and DIP Switch Setting

4.2. Connection Procedure and DIP Switch Setting
NOTE
This gateway gets the power from the KNX bus itself, so it does not need an external power supply. If
there is a power cut in the bus, the gateway will turn off.
Once the bus is powered again:
• The gateway turns on, keeping its parameter's configuration.
• It polls the bus and updates all status objects for the Modbus devices connected to it.
USER MANUAL Version 1.0
CAUTION
Before connecting the gateway, disconnect the KNX bus from its power supply.
SW1
Use this DIP switch to configure the EIA-485 port:
• Switch 1:
– ON: 120 Ω termination active
– OFF: 120 Ω termination inactive (Default)
IMPORTANT
If you install the gateway at one end of the EIA-485 bus, activate the
terminal resistor functionality by setting switch 1 to the ON position.
CAUTION
Make sure there are at most two end-of-line resistors on the EIA-485 bus.
Having more than that could cause electrical issues.
• Switches 2 and 3:
– ON: Polarization active (Default)
– OFF: Polarization inactive
IMPORTANT
The bus must be polarized only at one point of the line, preferably on the
Client side. To disable the gateway's line polarization, set switches 2 and 3
to the OFF position.
1. Connect the EIA-485 bus to connectors A3 (A+), A2 (B-), and A1 (SNGD) of the gateway's
Port A.
2. Connect the KNX bus to the connectors + and - of the gateway's KNX port. Respect the
polarity and use a KNX standard cable.
3. Reconnect the KNX bus to its power supply.
4. Connect all the devices of your installation (the EIA-485 bus devices) to their power
supplies.
Modbus RTU Client to KNX TP Gateway
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