HMS Networks Intesis INKNXMBM1000200 Installation Manual page 2

LED ID and color
KNX programming mode
RED
Power/Modbus activity
YELLOW
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CONNECTIONS AND SWITCHES
SW1
Identifies the status of the 120 Ω terminal resistor functionality and bus polarization.
The factory settings are: termination resistor disabled and line polarization enabled
(See SW1 configuration details in the Technical Specifications table).
Port A / EIA-485
Connect the EIA-485 bus to connectors A3 (A+), A2 (B-), and A1 (SNGD) of the
gateway's Port A as indicated in the connection diagram.
EIA-485 bus standard specifications
• Maximum distance: 1200 m (0.75 mi)
• Maximum number of devices connected to one bus segment: 32. Notice that using
repeaters, you can add up to 254 devices (not counting this gateway)
• Bus polarization
• Maximum number of termination resistors: 2 of 120 Ω (one at each end of the
bus).
IMPORTANT
If you install the gateway at one end of the EIA-485 bus, activate the terminal resistor
functionality setting the switch 1 to the ON position.
The bus must be polarized only at one point of the line, preferably on the Client side.
To disable the line polarization of the gateway, set the switches 2 and 3 to the OFF
position.
KNX Port
Connect the KNX TP1 bus to the gateway's KNX port. Respect the polarity of the
connectors (- and +) and use a KNX standard cable.
LEDs STATUS
Pattern
Off
Steady On
Off
Steady On
Slow blinking
Fast blinking
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Description
Programming mode disabled
Programming mode enabled
No power
Device powered but without communication
An invalid answer or no answer received from a server device
Correct package received from a configured server device
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