KNX-GW-MODBUS-REG-RS485 - KNX Modbus RTU Gateway, RS485, DIN Rail
KNX-GW-MODBUS-REG-RS485 - KNX Modbus RTU Gateway, RS485, DIN Rail

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ARCUS EDS

KNX-GW-MODBUS-REG-RS485 - KNX Modbus RTU Gateway, RS485, DIN Rail

SKU: 40300002
(0)
✗ UL Listed
This product has not been certified by an NRTL (UL, ETL, CSA or equivalent). Installation in USA projects may require a Field Evaluation by a recognized laboratory. Consult your local AHJ before specifying.
~ Low Voltage · SELV
This device operates on a Safety Extra Low Voltage circuit — such as the KNX 29V bus or a DALI 16V bus (NEC Class 2). When powered by an NRTL-listed power supply, many AHJs accept non-listed SELV devices. Verify with your local AHJ before specifying.
$256.41 USD
-17% $307.70 USD $256.41 USD
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The KNX-GW-MODBUS-REG-RS485 is a 2-module DIN-rail Modbus RTU master for RS485, with galvanic isolation between the Modbus and KNX sides. It reads and writes up to 32 scalable datapoints from Modbus devices such as meters, inverters and HVAC equipment.

All datapoints are configured in ETS, with multiplier and offset scaling and a reading cycle from 10 seconds to 12 hours. The gateway requires a 24-32 VDC auxiliary supply.

Key Features

  • Modbus RTU master with 32 freely assignable, scalable datapoints
  • 300-115,200 baud, parity even/odd/none, device IDs 1-247
  • Multiplier/offset scaling; KNX 1, 8, 16 and 32-bit datapoint types
  • Reading cycle adjustable from 10 s to 12 h
  • RS485 for up to 31 Modbus slaves, galvanically isolated from KNX
  • Auxiliary supply 24-32 VDC, max. 100 mA (required)
  • 2-module DIN rail, IP20; ETS app KNX-GW-ModBus

Technical Specifications

Article no. 40300002
KNX bus voltage KNX 21-32 VDC
Power consumption 10 mA KNX load
Auxiliary supply 24-32 VDC, max 100 mA
Inputs / outputs & connections KNX terminal; RS485 Modbus (max 32 participants incl. master); no 12 V output; Modbus galvanically isolated from KNX
Protection rating IP20
Mounting DIN rail, 2 TE, plastic
Operating temperature -25 to +80 °C (-13 to 176 °F)

Downloads

(CE certified; not UL/NRTL listed — verify local code requirements before specifying in US installations)

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