RS485 Adapters, Converters, Isolators,
Accessories and Technical Data
Is RS-485 the right solution for your data communications
problem? You’ve come to the right place to find out.
B&B Electronics offers the broadest range of RS-485 converters,
isolators, repeaters, cards and other adapters. We also have
enough tech notes, quick guides and white papers to make you
an expert. Not interested in becoming an expert? Give us a
call – our Technical Support team is expert - so you
don’t have to be!
RS-485 Quick Facts
RS-485 is standard for sending serial data. It uses a pair
of wires to send a differential signal over distances up to
4000 feet without a repeater. The differential signal makes
it very robust, RS-485 is one of the most popular communications
methods used in industrial applications where it’s noise
immunity and long-distance capability are a perfect fit. RS-485
is capable of multi-drop communications – up to 32 nodes
RS-485 can be configured for their half or full duplex.
Half duplex typically uses one pair of wires, full duplex
requires two pair.
RS-485 Tech Tip: Always run a signal ground
with RS-485
| Typical Data rates: |
Up to 115,200 baud |
| Max Distance: |
4000 feet |
| Cabling Requirements: |
Twisted Pair plus signal ground |
| Duplex: |
Half or Full depending on configuration |
| Multidrop: |
Up to 32 nodes |
| RS-485 Tech Support Tip: |
Always run a signal ground with RS-485 |
| Common Applications: |
Industrial Equipment, Modbus, Machine to Machine (M2M)
communications |
Pros:
- Long distance
- Noise immunity
- Multidrop capable
- Used in many popular fieldbusses
Cons
- Physical layer only, no protocol specified
- Not inherently isolated – use of isolated products
recommended
B&B Electronics RS485 Products
- Serial Converters
- Serial Isolators and Repeaters
- Ethernet Serial Device Servers. Connect RS-485 equipment to your LAN or WAN.
- Wireless. Convert from RS-485 to 802.11 or Proprietary RF.
- USB to RS-485 Converters
- Data Line Surge Suppression
- Cards
- Serial Data
Switches
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Servers
