MOXA EDS-316 Series Modules

Technical Dossier

Product Details And Specifications

MOXA EDS-316 Series: Comprehensive Module Range and Technical Overview

The MOXA EDS-316 series is a line of managed industrial Ethernet switches engineered for deployment in high-reliability, continuous-operation environments including petrochemical plants, nuclear power facilities, offshore oil platforms, and large-scale refinery automation networks. With a DIN-rail form factor, wide operating temperature tolerance, and support for redundant ring topologies (Turbo Ring and RSTP), the EDS-316 series has accumulated a substantial installed base across global heavy industry since its introduction in the early 2000s. The series supports up to 16 Ethernet ports in various copper and fiber configurations, making it a standard backbone switch in distributed control system (DCS) and SCADA network architectures where deterministic latency and fault tolerance are non-negotiable requirements.

The Evolution of EDS-316 Architecture

The EDS-316 series was introduced by MOXA as part of its EDS (Ethernet Device Server/Switch) product family targeting industrial automation networks operating under IEC 61850 and ISA-99 frameworks. Early revisions of the EDS-316 utilized store-and-forward switching with 10/100Base-TX copper ports and optional 100Base-FX fiber uplinks in SC or ST connector formats. The architecture was designed around a non-blocking switching fabric with VLAN (IEEE 802.1Q), QoS (IEEE 802.1p), and IGMP snooping to support multicast-heavy DCS traffic patterns.

As industrial networks migrated toward IEC 62443 cybersecurity compliance requirements, MOXA introduced firmware revisions adding SNMPv3, HTTPS management, and port-based access control. The EDS-316 series spans multiple hardware sub-variants differentiated by fiber type (single-mode vs. multi-mode), connector type (SC vs. ST), and temperature rating (standard 0–60°C vs. extended -40–75°C for the -T suffix models). The series has entered its mature/end-of-life phase; MOXA's current replacement recommendation is the EDS-G516E series for gigabit-capable upgrades, though the EDS-316 remains in active service across thousands of legacy installations requiring long-term maintenance support.

EDS-316 Full Catalog & Functionalities (SKU List)

The following SKUs represent the verified EDS-316 product range. Models are classified by port configuration, fiber interface, and operating temperature grade.

Managed Switch — Copper + Multi-Mode Fiber (SC Connector)

• EDS-316: 16-port managed switch, 14×RJ45 + 2×100Base-FX MM SC, 0–60°C
• EDS-316-MM-SC: 16-port managed switch, multi-mode fiber SC uplinks, standard temp
• EDS-316-MM-SC-T: 16-port managed switch, multi-mode SC, extended temp -40–75°C

Managed Switch — Copper + Single-Mode Fiber (SC Connector)

• EDS-316-SS-SC: 16-port managed switch, 14×RJ45 + 2×100Base-FX SM SC, 0–60°C
• EDS-316-SS-SC-T: 16-port managed switch, single-mode SC, extended temp -40–75°C — Current SKU: 4600136

Managed Switch — Copper + Multi-Mode Fiber (ST Connector)

• EDS-316-MM-ST: 16-port managed switch, multi-mode fiber ST uplinks, 0–60°C
• EDS-316-MM-ST-T: 16-port managed switch, multi-mode ST, extended temp -40–75°C

Managed Switch — Copper + Single-Mode Fiber (ST Connector)

• EDS-316-SS-ST: 16-port managed switch, single-mode fiber ST uplinks, 0–60°C
• EDS-316-SS-ST-T: 16-port managed switch, single-mode ST, extended temp -40–75°C

Managed Switch — Copper Only

• EDS-316-T: 16-port all-copper managed switch, extended temp -40–75°C

Managed Switch — Dual Fiber Uplink Variants

• EDS-316-2MM-SC: 14×RJ45 + 2×MM SC fiber, managed, 0–60°C
• EDS-316-2MM-SC-T: 14×RJ45 + 2×MM SC fiber, managed, extended temp
• EDS-316-2SS-SC: 14×RJ45 + 2×SM SC fiber, managed, 0–60°C
• EDS-316-2SS-SC-T: 14×RJ45 + 2×SM SC fiber, managed, extended temp
• EDS-316-2MM-ST: 14×RJ45 + 2×MM ST fiber, managed, 0–60°C
• EDS-316-2SS-ST: 14×RJ45 + 2×SM ST fiber, managed, 0–60°C
• EDS-316-2SS-ST-T: 14×RJ45 + 2×SM ST fiber, managed, extended temp

Sourcing Hard-to-Find & Obsolete EDS-316 Parts

Quality Control for the EDS-316 Range

Each EDS-316 unit processed by DriveKNMS undergoes a structured test protocol designed around the specific hardware architecture of the series. The EDS-316 backplane uses a shared switching fabric with dedicated fiber transceiver modules; testing procedures address both the copper switching matrix and the optical path integrity of SC/ST fiber ports. The standard test sequence includes: power-on self-test (POST) verification and boot log analysis, port-by-port traffic throughput test at 100Mbps line rate using RFC 2544 methodology, fiber transceiver optical power measurement (TX/RX dBm) against MOXA factory specifications, VLAN segmentation and IGMP snooping functional verification, Turbo Ring and RSTP redundancy protocol failover timing test (target: <20ms recovery), SNMP v1/v2c/v3 management interface accessibility check, and thermal stress cycling for -T suffix units to validate extended temperature compliance. Units that do not meet all test criteria are quarantined and not listed for sale.