Impractical Cable Routes
Roads, existing structures and dispersed equipment can make a new RS485 or RS232 cable expensive or disruptive.
CONNECTION NEED
Replace Difficult Serial Cable Routes with a Defined Wireless Link
Connect distributed RS232 and RS485 equipment where trenching, road crossings or new long cable routes are impractical.
Plan the endpoint interfaces, point-to-point or multipoint radio topology, local RS485 branches, RF path and commissioning criteria before replacing a serial cable.
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FIELD TO NETWORK
Endpoint Interface Mismatch
Each location still needs the correct USB, RS232 or RS485 electrical interface even when the middle path becomes wireless.
Unverified RF Conditions
Obstructions, antenna placement, interference and regional radio rules affect the usable link and must be checked on site.
Local RS485 Branching
Multiple field devices may require a controlled local bus or isolated hub rather than a passive wire split at the radio endpoint.
SOLUTION ARCHITECTURE
A Clear Path from Field Device to Operational Data
Use the interface and network constraint to define each connection layer before selecting a model.
Local Serial Equipment
Meter · PLC · Controller
RS232RS485
Matched Wireless Endpoint
USB · RS232 · RS485 variant
LoRaTPUNB
Commissioned RF Link
Point-to-point · Multipoint
Wireless
Remote Serial Segment
Host or controlled RS485 branches
RS232RS485
RECOMMENDED PRODUCTS
Verified DTECH Products for This Solution
Only products with confirmed data and active detail pages are presented.
Wireless Serial Transceivers
TPUNB Series
Extends serial communication wirelessly across dispersed or difficult-to-wire sites.
- LoRa / TPUNB wireless link
- USB, RS232 or RS485 variants
Industrial Serial Hubs, Repeaters and Isolators
DT-9022
Segments and extends RS422/RS485 branches with industrial protection.
- Two RS485 network branches
- 2500Vrms isolation
Industrial Serial Hubs, Repeaters and Isolators
IOT9024I
Isolates and distributes multi-branch RS485 networks.
- Four independent RS485 branches
- 2500Vrms isolation per port
APPLICATION SCENARIOS
Designed Around Real Project Conditions
Start with the operating environment, installed interfaces and required communication path.
APPLICATION
Remote Metering
Carry serial data between a monitoring location and dispersed meters after the RF route is commissioned.
Discuss This Application
APPLICATION
Road or Yard Crossing
Bridge a physical obstruction where a new buried or overhead serial cable is impractical.
Discuss This Application
APPLICATION
Industrial Retrofit
Add a defined wireless hop while retaining compatible serial equipment and documented field settings.
Discuss This ApplicationCUSTOMER VALUE
Build a More Predictable Connectivity Project
Turn interface choices into measurable project outcomes and a clearer delivery plan.
Defined Endpoint Roles
Match each endpoint to its verified USB, RS232 or RS485 interface instead of treating every serial port as interchangeable.
Flexible Link Topology
Use point-to-point, point-to-multipoint or multipoint-to-multipoint roles where the selected product documentation and application support them.
Controlled Local Branches
Add two- or four-branch RS485 distribution only where local field devices require separate protected segments.
Site-Based Commissioning
Verify serial timing and radio performance on the real route before retiring the existing cable path.
No Cellular Dependency
Use the documented TPUNB product role without requiring cellular coverage or a data card.
Engineering Review
Share interfaces, topology, RF conditions and regulatory region with DTECH for model and architecture confirmation.
ENGINEERING RESOURCES
View Technical Blog Continue Your Product Evaluation
010203
How to Replace an RS485 Cable with a Wireless Serial Link
Plan endpoint variants, RF conditions, local branches, commissioning and product roles for a LoRa-based serial link.
Wired vs Wireless Serial Communication
Compare installation, serviceability and deployment constraints before adding a wireless hop.
RS485 Star Topology and Active Hubs
Decide when a local endpoint needs defined active branches instead of a passive wire split.
REQUEST A SOLUTION
Need the Right Connectivity Architecture for Your Project?
Share your interfaces, communication distance, network type and installation environment. DTECH will help confirm the product roles and next selection step.
Serial interfaceNumber of devicesCommunication distanceNetwork typePower inputInstallation environment
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