SW485WA
SW485WA
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The 3onedata SW485WA converts one RS-232 interface to one RS-485 interface and draws power from the RS-232 TXD, RTS and DTR signal lines. Its official datasheet lists a baud rate up to 38400 bps, RS-485 distance up to 1200 m, support for 128 nodes, 1500 V photoelectric isolation, 600 W surge protection, 15 kV electrostatic protection, and -40 to +80 °C operation. Host compatibility remains subject to engineering review.
Application evidence
Planning an application with this component?Our engineers will review your architecture and confirm where the SW485WA fits — before you commit.
Specifications
| Key specifications | |
| Model | SW485WA |
|---|---|
| Interfaces | 1 × EIA RS-232C + 1 × EIA RS-485 |
| Rs232 Connector | DB9 female |
| Rs485 Connector | 3-pin terminal block |
| Maximum Baud Rate | 38400 bps |
| Direction Control | automatic RS-485 data-flow control |
| Rs232 Distance | up to 15 m |
| Rs485 Distance | up to 1200 m |
| Node Capacity | up to 128 RS-485 nodes |
| Isolation | 1500 V photoelectric isolation |
| Surge Protection | 600 W |
| Electrostatic Protection | 15 kV |
| Power Method | powered from RS-232 TXD, RTS and DTR signal lines; no external supply listed |
| Current Consumption | 20 mA or less static; 50 mA or less dynamic mean |
| Operating Temperature | -40 to +80 °C |
| Storage Temperature | -40 to +85 °C |
| Humidity | 5%–95% RH, non-condensing |
| Housing | plastic |
| Dimensions | 82 × 33 × 16.5 mm |
| Weight | 50 g |
| Certifications | CE, FCC, RoHS |
| Warranty | 3 years |
| Commercial | |
| Model number | SW485WA |
| Brand | 3onedata |
| Category | Communication Modules |
| Certification | CE · FCC · RoHS |
| Availability | Confirm availability at RFQ |
Key specifications
Commercial
Cross-reference
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Engineering notes
For the SW485WA, engineering review covers physical ports, network topology and ring behavior, protocol-bridge mappings, data model, timing, and the required management layer. Any cross-brand proposal is a candidate replacement — subject to engineering review.
- The passive power method depends on the host RS-232 signal lines and available current
- host compatibility must be checked before selection
- The official datasheet lists a maximum baud rate of 38400 bps and does not publish higher rates
- Pinout, grounding, cable, node count, termination and surge environment remain subject to engineering review
- Availability and lead time are confirmed at RFQ
Frequently asked
Does SW485WA require an external power supply?
The official datasheet lists power from the RS-232 TXD, RTS, and DTR signal lines and does not list an external supply. The host port's signal-power capability must be reviewed.
What baud rate, distance, and node count are published for SW485WA?
The datasheet lists a baud rate up to 38400 bps, RS-232 distance up to 15 m, RS-485 distance up to 1200 m, and support for up to 128 RS-485 nodes.
What isolation and surge protection does SW485WA provide?
SW485WA is specified with 1500 V photoelectric isolation, 600 W surge protection, and 15 kV electrostatic protection.
Can SW485WA replace another passive RS-232 to RS-485 converter?
SW485WA may be evaluated as a candidate replacement, subject to engineering review of host signal power, pinout, baud rate, direction control, cable, distance, node count, grounding, isolation, and protection.
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