SUPCON XP300 Series Modules

Technical Dossier

Product Details And Specifications

SUPCON XP300 Series: Comprehensive Module Range and Technical Overview

The SUPCON XP300 series represents one of the most widely deployed distributed control system (DCS) and programmable logic controller (PLC) platforms in Chinese heavy industry. Installed across petrochemical refineries, coal chemical complexes, nuclear auxiliary systems, and large-scale power generation facilities, the XP300 platform has accumulated a substantial installed base since its commercial introduction in the early 2000s. SUPCON (Zhejiang Supcon Technology Co., Ltd.), headquartered in Hangzhou, China, developed the XP300 series as the I/O and controller backbone of its JX-300X and JX-300XP DCS architectures — systems that remain operational in thousands of process plants across Asia, the Middle East, and Southeast Asia. The XP316, as a representative analog input module within this series, exemplifies the platform's design philosophy: high channel density, HART protocol compatibility, and direct integration with the SCnet II redundant communication bus.

The Evolution of XP300 Architecture

The XP300 series was introduced as the I/O subsystem for SUPCON's JX-300X DCS platform, which itself succeeded the earlier JX-100 and JX-200 generations. The JX-300X platform standardized on the SCnet fieldbus for inter-module communication, with the XP300 I/O modules connecting to the main controller via a proprietary backplane bus. When SUPCON released the JX-300XP (the "P" denoting enhanced processing), the XP300 module family was carried forward with full backward compatibility, allowing existing installations to upgrade controllers without replacing field I/O wiring or terminal assemblies.

Over successive hardware revisions, SUPCON improved the XP300 modules' isolation ratings, increased channel-to-channel isolation voltage, and added HART pass-through capability to analog I/O modules. Later revisions also addressed EMC compliance for IEC 61000-series requirements. As of 2026, the XP300 series is in the mature-to-declining phase of its product lifecycle. SUPCON's current flagship DCS platform, the ECS-700, uses a different I/O architecture (the XP series is not directly compatible). This lifecycle status makes long-term spare parts availability a critical operational concern for plants that cannot justify a full DCS migration.

XP300 Full Catalog & Functionalities (SKU List)

Analog Input Modules

• XP316: 16-channel analog input module, 4–20 mA / 1–5 V, HART-compatible, SCnet II bus interface
• XP313: 8-channel analog input module, thermocouple / RTD / mV input, cold junction compensation
• XP314: 8-channel analog input module, 4–20 mA with HART, high-density field termination
• XP315: 16-channel analog input, voltage/current configurable per channel, galvanic isolation

Analog Output Modules

• XP322: 8-channel analog output module, 4–20 mA, loop-powered, HART pass-through
• XP323: 4-channel analog output, high-drive 750 Ω load capacity, short-circuit protection
• XP324: 8-channel analog output, voltage output 0–10 V, isolated per channel

Digital Input Modules

• XP361: 32-channel digital input module, 24 VDC, wet contact, optically isolated
• XP362: 16-channel digital input, 110/220 VAC compatible, surge-protected inputs
• XP363: 32-channel digital input, dry contact, configurable debounce filter

Digital Output Modules

• XP371: 16-channel digital output, relay type, 2 A per channel, NO/NC configurable
• XP372: 32-channel digital output, transistor type, 24 VDC, 0.5 A per channel
• XP373: 8-channel digital output, high-current relay, 5 A per channel, DIN rail mount

Controller & CPU Modules

• XP243: Main controller module for JX-300XP, dual-redundant CPU configuration, SCnet II master
• XP244: Enhanced controller module, increased scan rate, expanded memory, Ethernet supervisory port

Communication & Power Modules

• XP233: SCnet II communication adapter, redundant ring topology support, fiber optic option
• XP251: 24 VDC power supply module for XP300 I/O chassis, 10 A output, redundancy-capable
• XP252: Redundant power supply module, hot-swap capable, status LED and relay alarm output

Sourcing Hard-to-Find & Obsolete XP300 Parts

As the XP300 series transitions out of active production, procurement teams at refineries and chemical plants face increasing lead times from OEM channels. SUPCON's official spare parts program prioritizes its current ECS-700 platform, which means XP300 modules — particularly low-volume variants such as the XP313 thermocouple input module or the XP373 high-current relay output — are subject to extended delivery schedules or outright discontinuation notices.

DriveKNMS maintains a dedicated inventory of XP300 series modules sourced through authorized secondary market channels. All units are subject to pre-shipment functional verification. For plants operating under long-term service agreements or those in jurisdictions where DCS migration is not feasible within a 3–5 year window, DriveKNMS provides lifecycle extension support including module exchange programs, repair-and-return services, and consignment stock arrangements. Contact our technical team with your BOM or spare parts list for availability confirmation and lead time quotation.

Quality Control for the XP300 Range

The XP300 series uses a proprietary backplane connector and SCnet II bus protocol that requires module-level functional testing beyond simple power-on verification. DriveKNMS applies the following test protocol to all XP300 modules prior to shipment:

• Backplane bus communication test: Each module is seated in a reference XP300 chassis and polled via SCnet II to confirm correct node addressing and data frame integrity.
• Channel-level I/O verification: Analog modules are tested at 0%, 25%, 50%, 75%, and 100% of rated input/output range using calibrated signal sources. Accuracy is verified against the module's published specification (typically ±0.1% of full scale).
• HART communication check: For HART-capable modules (XP316, XP322, XP314), a HART master device is used to confirm pass-through communication at 1200 baud.
• Isolation resistance test: Channel-to-channel and channel-to-bus isolation is measured at 500 VDC using a calibrated insulation tester.
• Thermal soak: Modules are operated at rated load for a minimum of 2 hours at ambient temperature before final acceptance.