Product Details
Product Overview
The 4351A Terminal Communication Module (TCM) acts as the primary communication bridge for high-availability industrial control systems. It facilitates seamless data exchange between the controller and external networks via dual copper Ethernet ports. This module integrates critical diagnostic protocols and high-speed serial processing to ensure real-time telemetry and peer-to-peer synchronization in mission-critical environments. We supply this unit as 100% brand new and original factory stock.
Technical Specifications
| Feature | Specification |
| Network Interface | 2 x 10/100BaseT Ethernet (RJ-45) |
| Serial Ports | 4 x RS-232/RS-485 (DB-9) |
| Port Isolation | 500 VDC |
| Protocol Support | Modbus TCP/IP, TSAA, TriStation, SNTP, Jet Direct |
| Serial Speed | Up to 115.2 Kbps per port |
| Power Requirement | 24V DC |
| Physical Weight | Approx. 0.5 kg |
Engineering Advantages
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Deterministic Synchronization: The NET 1 port executes hardware-level Peer-to-Peer Time Synchronization. This eliminates jitter across distributed nodes, ensuring that time-stamped events remain accurate within complex automated sequences.
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Robust Electrical Isolation: With 500 VDC isolation on communication ports, the 4351A shields the internal logic from ground loops and transient voltage spikes common in heavy industrial motor-drive environments.
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Simplified Network Printing: The native Jet Direct support allows the module to trigger automated reports and alarm logs directly to network printers, bypassing the need for an intermediate PC workstation.
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Versatile Modbus Implementation: The module supports extensive Modbus functions (01 through 16). This allows engineers to perform everything from simple coil reads to complex multiple-register presets, making it compatible with a vast array of legacy and modern SCADA systems.
FAQs
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What is the primary difference between the 4351A and the 4352A?
The 4351A utilizes copper Ethernet (RJ-45) for standard local networking, while the 4352A employs fiber-optic (MTRJ) connectors for long-distance runs or areas with extreme electromagnetic interference.
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Does the 4351A support both Master and Slave Modbus configurations?
Yes. The module supports Modbus TCP/IP in both Master and Slave modes, providing the flexibility to either pull data from field devices or report data to a higher-level HMI.
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What do the 'FIRM' and 'ACTIVE' LEDs indicate during operation?
The ACTIVE LED signals that the module is currently controlling the I/O bus, while the FIRM LED indicates the status of the resident firmware—essential for verifying successful field updates or identifying initialization errors.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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