QUATECH DSC-200/300 – Dual-Port RS-232/422/485 Serial Interface Module | Advantech Industrial Platform
Engineering Background: In modern industrial automation and data acquisition environments, reliable serial communication remains the backbone of legacy device integration. The QUATECH DSC-200/300 is engineered to bridge the gap between contemporary computing platforms and field-level instrumentation, PLCs, barcode scanners, and SCADA peripherals that rely on RS-232, RS-422, or RS-485 protocols.
Product Positioning: Designed for system integrators and OEM engineers deploying Advantech embedded computing platforms, the DSC-200/300 delivers dual-port, multi-protocol serial connectivity in a compact, industrial-grade form factor. It is the preferred choice for applications demanding deterministic communication, high noise immunity, and long-distance data transmission in harsh environments.
Complete Technical Specifications
- SKU / Part Number: DSC-200/300
- Manufacturer: QUATECH
- Platform Compatibility: Advantech Industrial Systems
- Interface Type: Dual-Port Serial (RS-232 / RS-422 / RS-485)
- Number of Ports: 2 (independently configurable per port)
- Supported Protocols: RS-232, RS-422, RS-485 (2-wire & 4-wire)
- Bus Interface: PCI / PC/104 (per variant)
- UART: 16C654 or equivalent high-performance UART with 64-byte FIFO
- Baud Rate: Up to 921.6 Kbps
- Data Bits: 5, 6, 7, 8
- Stop Bits: 1, 1.5, 2
- Parity: None, Odd, Even, Mark, Space
- ESD Protection: ±15 kV (RS-232), ±15 kV (RS-485/422 data lines)
- Operating Temperature: 0°C to +70°C (industrial extended range available)
- Power Consumption: 3.3V / 5V via bus
- Weight: 1,340 g (packaged)
- OS Support: Windows 10/11, Windows Server, Linux (kernel 4.x+), QNX
- RoHS Compliant: Yes
Proven Application Environments
- Factory Automation: Connecting PLCs (Siemens S7, Allen-Bradley, Mitsubishi) to SCADA hosts via RS-485 Modbus RTU over distances up to 1,200 m
- Machine Vision & Inspection: High-speed RS-422 links between camera controllers and image processing units requiring deterministic latency
- Transportation & Logistics: Barcode scanner arrays and RFID readers integrated into Advantech-based conveyor control systems
- Energy & Utilities: RTU-to-master communication in substation automation using RS-485 multi-drop topologies
- Medical Instrumentation: Serial data acquisition from patient monitoring peripherals in CE-marked embedded systems
- Building Automation (BAS): BACnet MS/TP and Modbus RTU device integration over RS-485 networks
Engineering Advantages
- Multi-Protocol Flexibility: Each port independently switchable between RS-232, RS-422, and RS-485 — no hardware jumpers required on select variants
- High-Speed FIFO Buffering: 64-byte transmit/receive FIFO per port eliminates CPU interrupt overhead at high baud rates
- Robust ESD & Surge Protection: ±15 kV protection on all signal lines ensures reliability in electrically noisy industrial environments
- Plug-and-Play Driver Support: WHQL-certified drivers for Windows; open-source drivers for Linux reduce integration time
- Long-Distance RS-422/485: Supports multi-drop networks up to 1,200 m at 100 Kbps, ideal for distributed I/O architectures
- Advantech Ecosystem Certified: Validated for use with Advantech ARK, MIC, and IPC series embedded computers
System Architecture & Signal Flow
The DSC-200/300 integrates directly into the host system’s PCI or PC/104 bus. Each serial port is driven by an independent high-performance UART with dedicated FIFO buffers. Protocol selection (RS-232/422/485) is managed via software register or hardware switch, enabling dynamic reconfiguration without system downtime. RS-485 auto-direction control (RTS toggle or automatic transceiver enable) is supported for seamless half-duplex multi-drop operation. Signal isolation options are available for applications requiring galvanic separation between the host and field devices.
Sourcing & Quality Verification
- Origin: Genuine QUATECH factory production; not refurbished or counterfeit
- Inspection: Each unit undergoes functional loopback testing and protocol verification before shipment
- Traceability: Full serial number and batch traceability available upon request for regulated industries
- Warranty: 12-month hardware warranty; extended warranty available
- Certifications: CE, FCC Part 15 Class B, RoHS 2011/65/EU
- Packaging: Anti-static ESD bag + foam-lined carton; safe for international air and sea freight
Procurement Process
- Confirm Compatibility: Verify your Advantech platform’s bus type (PCI / PC/104) and OS version against the DSC-200/300 datasheet
- Request a Quote: Contact [email protected] for volume pricing, lead time, and export documentation
- Place Order: Add to cart directly or submit a purchase order via email for NET-30 terms (approved accounts)
- Receive & Verify: Inspect packaging integrity and serial number upon receipt; functional test kit available on request
- Technical Support: Post-sale integration support provided by Konmask engineering team at no additional charge
Technical FAQ
Q: Can both ports operate simultaneously at different protocols?
A: Yes. Each port is independently configurable. Port 1 can run RS-232 while Port 2 operates in RS-485 half-duplex mode concurrently.
Q: Is the DSC-200/300 compatible with Linux kernel 5.x?
A: Yes. QUATECH provides open-source drivers compatible with Linux kernels 4.x through 6.x. Konmask can supply the driver package upon purchase.
Q: What is the maximum cable length for RS-485 operation?
A: Up to 1,200 m at 100 Kbps using 120Ω terminated twisted-pair cable (e.g., Belden 9841 or equivalent).
Q: Does the module support Modbus RTU out of the box?
A: The hardware is fully Modbus RTU-capable. Protocol stack implementation is handled at the application layer (e.g., via CODESYS, LabVIEW, or custom firmware).
Q: Is isolated RS-485 available for this model?
A: Optical isolation variants exist within the QUATECH DSC series. Contact Konmask to confirm availability of isolated versions for your application.
Q: What is the lead time for this part?
A: In-stock units ship within 1–3 business days. Out-of-stock lead time is typically 2–4 weeks. Contact us for real-time inventory status.
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