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RS232 RS485 RS422 Repeaters / Hub

RS485 HUB / RS485 SPLITTER / RS485 STAR WIRING TOPOLOGY

 

Isolated RS232 Repeater

 
 

RS485/RS422 Repeater

 
  Isolated RS485 / RS422 Repeater / Converter (Rack/Wall-Mount)  
  Isolated RS485 Hub / Splitter (Rack/Wall-Mount)  
     
  Other products  
     
 

RS232 to RS485 Converters

 
 

RS232 to RS422 Converters

 
 

RS232 RS485 RS422 to TTL Converters

 
 

RS232 Isolators / Isolated Converters

 
 

Fiber Optic Converters

 
 

USB Serial Adapters

 
 

RS232 Serial Analyzer

 
 

 
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Testimonials

 
 
"I am communicating with kWh (energy) meters that have the RS485 built in, the port-powered converter's auto-turnaround feature works really well for my application, and I don't have to change any configuration."
- Peter
"Your isolators have been working reliably for years without a single failure or trouble, we are satisfied with the products."
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David
 
 
 
 
 
 
   

Industrial Opto-Isolated RS485 Hub/Splitter

RS485 Hub

Model: HUB-485-4
$149.95 In stock
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The HUB-485-4 is a rugged, industrial-grade, optically-isolated RS-485 Hub/Splitter/Repeater, which can be used to expand RS-485 networks by splitting one RS-485 network into four, in turn increasing the maximum number of nodes and the distance covered by an RS-485 network.

This industrial opto-isolated RS485 Hub / Splitter is enclosed in a heavy-duty, rustless ABS housing. It operates within a temperature range of -40ºF to 185ºF (-40ºC to 85ºC), features 600W surge protection, 15kV static protection and opto-isolation circuitry, which effectively protect your RS232/RS485 devices from ground loops, noise problems, transient surges, remote lightning and spikes. The unit comes with options for RS-485 or RS-232 input, for easy installation. It was designed so that data coming from the input (RS-232 or RS-485) will transmit to all four loops of RS-485 networks. However, each loop of RS-485 devices will transmit data back to the input only, thus reducing any possible interference between each loop of the RS-485 devices. Also, the failure of any individual loop will not affect other loops, making the RS-485 networks more robust and reliable. The unit supports data rates up to 115.2K Baud and features data format auto-sensing and self-adjusting. Therefore, it requires no manual settings, software drivers or flow control, making the unit a highly reliable and truly plug-and-play device.

A separate external power supply is included in the package, and, thanks to the professional and unique casing design, the product can be mounted directly on a wall, panel or DIN Rail, without a need of using any unsecured DIN-Rail or wall-mount adapters. The unit is backed by our 30-day risk-free money-back guarantee and 5-year replacement warranty.

Baud rates: 300 to 115.2K Baud.

datasheet | FAQs | product selection guide
rs485/rs422 application note
testing info | declaration of conformity

 

 


 

 

 

 

 

PRODUCT PHOTOS (ISOLATED RS485 HUB / SPLITTER / REPEATER)

Opto-Isolated-RS485-Hub
RS485 Hub - View RS485 Splitter - View RS485 Repeater - View
 

FEATURES (ISOLATED RS485 HUB / SPLITTER / REPEATER)

- Industrial grade Enclosed in a rugged, rustless ABS housing.
- Direct DIN-Rail (Rack)
or Wall / Panel mounting.
- Expands RS-485 networks by splitting one RS-485 network into four, thus making
   star-wiring possible for RS-485 networks.

-
The failure of any individual loop will not affect the others, making the RS-485
   network more robust and reliable.
- 300 to 115.2K Baud operation (auto-sensing & self-adjusting).

-
Optical isolation effectively protects RS-232/RS-485 devices from ground loops,
   noise problems, transient surges, remote lightning and spikes.
- Supports up to 512 (4x 128) nodes of RS-485 devices.
- No drivers needed.
- No DIP switch or jumper settings.
- Plug and play (hot-pluggable, data format auto-sensing & self-adjusting).
- Data direction auto-turnaround, no flow control is required.

- Operating temperature: -40ºF to 185ºF (-40ºC to 85ºC)
.
- Built-in 600W
surge protection, 15kV static protection and circuit protection.
- Surface Mount Technology manufactured to RoHS and ISO-9001 standards.
- Safety: Strictly certified by TUV
(Cert No. SG-CE-100004; SG-FCC-100001).
-
5-year manufacturer's warranty.
 

SPECIFICATIONS (ISOLATED RS485 HUB / SPLITTER / REPEATER)

Part Number:

HUB-485-4

Compatibility:

EIA/TIA RS-232 and RS-485 standards

Power Source:

9 to 30VDC (External AC to DC power adapter included)

External AC/DC Power Adapter: 9VDC/500mA (Input: 100~240VAC 50/60Hz, US type A plug)
Current Consumption: Less than 30mA
Optical Isolation: 2500Vrms (AC, 1min)

Baud Rates:

300 to 115,200bps (auto-sensing and self-adjusting)

Distance:

RS-232: 16ft (5m); RS-485: up to 4000ft (1.2km) at 19,200bps

Maximum Number of Nodes: Input: 1; Output: 4x 128 nodes

Connector:

2x 10-way Terminal Block

Surge protection: 600W

Static protection (ESD):

Up to 15KV

Dimensions (H x W x D):

4.9 x 3.6 x 0.9 in (125 x 73 x 33 mm)

Weight:

4.9 oz (140 g) (with terminal blocks)

Operating Temperature:

-40ºF to 185ºF (-40ºC to 85ºC)

Operating Humidity:

Up to 90% RH (no condensation)

   

CONVERTER CONNECTOR / TERMINAL BLOCK PINOUTS

RS-232/RS-485 Input Side:

Pin A+ B- GND1 TX RX 9-30V GND1
RS232 - - Input/DC GND TX RX DC+ Input/DC GND
RS485 485+ 485- Input/DC GND - - DC+ Input/DC GND
RS485 Splitter TB 2
Terminal Block (input side)
   
  4x RS-485 Output Side:
 
Pin A1+ B1- A2+ B2- A3+ B3- A4+ B4- GND2
Output 1 2 3 4 Output GND
RS485 485+ 485- 485+ 485- 485+ 485- 485+ 485- Output GND
RS485 Splitter
Terminal Block (output side)
   

CONNECTIONS (ISOLATED RS485 HUB / SPLITTER / REPEATER)

RS485 Hub Splitter Connection

Figure 1: RS-485 HUB/SPLITTER/REPEATER CONNECTION DIAGRAM

 
  INSTALLATIONS
 
 

Isolated RS485 RS422 converter repeater DIN rail mounting

 

            Figure 2: DIN-RAIL (RACK) MOUNTING

   
 

Isolated RS485 RS422 Converter / Repeater

 

                    Figure 3: WALL/PANEL MOUNTING

   
 

[+] TROUBLESHOOTING RS485 HUB / SPLITTER / REPEATER

 

   
 
 

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CommFront's mission is to provide superior products in terms of safety, simplicity and reliability. Our goal is to provide the best-value products on the market. Accordingly, we continuously review and improve our products, prices, and services to meet or even exceed industry requirements.
 

   

CommFront products are widely used in control and automation systems and have been proven to be extremely reliable, below are some of our valued customers, just to name a few:

 

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