XNXXSL2SS Modbus RTU Output Module – Honeywell XNX Series

Product Overview

• Honeywell XNXSL2SS – Modbus output module for XNX Universal Transmitter.
• Provides isolated RS485 output for multi-drop Modbus networks.
• Mutually exclusive with relay and Foundation Fieldbus options.
• Factory or field installable by qualified engineers.
• Specifically calibrated for Chlorine (Cl₂) low range detection.

Technical Specifications

• Model: XNXSL2SS
• Brand: Honeywell
• Series: XNX Universal Transmitter
• Gas type: Chlorine (Cl₂) – Low range
• Default range: 5.00 ppm
• Lower Detectable Limit: 0.15 ppm
• Default calibration point: 2.0 ppm
• Cal gas range: 30–70% of selected full scale
• Response time (T50): <20 sec | T90: <60 sec
• Accuracy: ±0.2 ppm
• Operating temperature: -10°C to 55°C (14°F to 131°F)

Communication & Network

• Protocol: Modbus RTU
• Physical layer: Isolated RS485
• Baud rate: 1200 to 19.2K
• Max nodes: 254 (XNX compatible transmitters only)
• Connections: RS485+, RS485-, Drain
• Functions supported: As per Foundation Fieldbus module (optional).

Installation & Setup

• Option factory-installed in display module.
• Can be installed in the field by a qualified service engineer.
• Follow wiring diagram for RS485 connections.
• Set baud rate and node address via software.

Compatibility

• Designed exclusively for Honeywell XNX Universal Transmitter.
• Replaces relay or Foundation Fieldbus modules.
• Works with any Modbus RTU master (PLC, SCADA, etc.).

Certifications & Compliance

• CE marked – meets European safety standards.
• UL listed for hazardous locations (pending).
• RoHS compliant.

Package Contents

• 1x Honeywell XNXSL2SS Modbus module
• Mounting screws and terminal block
• Quick start guide
• Warranty card

Warranty & Shipping

• 12-month warranty against defects in materials and workmanship.
• Orders dispatch within 12–24 hours (business days).
• Express shipping via FedEx, UPS, or DHL.

Expert Review

• “The XNXSL2SS is a reliable Modbus interface for chlorine detection. The isolated RS485 ensures stable communication even in noisy industrial environments. Response time is fast – critical for safety applications.” – Senior Instrumentation Engineer, Powergear X

Manager’s Insight

• “This module simplifies integration with existing control systems. It’s plug-and-play for most Modbus networks. We recommend it for plants that need accurate chlorine monitoring without complex wiring.” – Product Manager, Gas Detection

Applicable Devices & Scenarios

• Devices: Honeywell XNX transmitter, PLCs, SCADA systems, DCS.
• Scenarios: Water treatment plants, chemical storage, pulp & paper, semiconductor fabrication, HVAC monitoring.

Frequently Asked Questions

• Q: Can this module be used for other gases?

  A: No – it’s factory-calibrated for Chlorine (Cl₂) low range only.

• Q: Is the module hot-swappable?

  A: No – disconnect power before installation or removal.

• Q: What is the maximum cable length for RS485?

  A: Up to 1200 meters with proper termination.

• Q: Does it support 2-wire or 4-wire RS485?

  A: 2-wire (half-duplex) with drain/shield connection.

• Q: Can I use this module with a wireless gateway?

  A: Yes – if the gateway supports Modbus RTU over RS485.

Selection Guide & Comparison

• For relay output, see Honeywell XNXSL2RR.
• Need Foundation Fieldbus? Choose XNXSL2FF.
• For oxygen or other gases, consider Honeywell XNX series with different sensors.
• If you require analog output, check XNXSL2AI.
• Contact us for custom calibration or application advice.

For inquiries: sales@powergearx.com | +86 18030005825 (WhatsApp)

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