H2-ECOM100 PLC Communication Module Ethernet
The H2-ECOM100 is a high-performance Ethernet communication module designed for AutomationDirect’s DL205 (DirectLOGIC 205) series PLCs. It occupies one slot in the DL205 base and provides a 10/100 Mbps Ethernet port with auto-negotiation. The module supports multiple protocols simultaneously, including Modbus TCP (client and server), ECOM (AutomationDirect proprietary), and generic TCP/IP socket communications. It is ideal for connecting PLCs to HMIs, SCADA systems, and enterprise networks.
Hardware Specifications
The module is based on a 32-bit RISC processor with 8 MB of RAM for buffering. The Ethernet interface is an RJ45 connector with integrated isolation transformer (1500 V). LEDs: LINK/ACT (green), 100M (yellow), and STATUS (green/red). Power requirements: 200 mA from the +5 V backplane (supplied by base). No external power needed. Dimensions: 120 mm height x 35 mm width x 85 mm depth. Weight: 150 g.
Protocol Support
Modbus TCP – acts as a server (slave) to up to 8 simultaneous clients, or as a client (master) to up to 32 remote servers.
ECOM – AutomationDirect’s native protocol for peer-to-peer data exchange between DL205 CPUs (up to 16 stations).
ASCII / Raw Socket – send/receive ASCII strings via TCP or UDP (port configurable).
SMTP – send email alerts (up to 10 recipients).
DHCP or static IP – user selectable.
Configuration and Diagnostics
Configuration is performed via the built-in web server (HTTP) or using DirectSOFT programming software. The web interface allows setting IP address, subnet mask, gateway, and protocol parameters. Diagnostic pages display link status, packet counters, and active connections. The module also supports SNMP v1 for network management. A password-protected security level prevents unauthorized changes.
Data Exchange Capabilities
The H2-ECOM100 can read/write V-memory, X, Y, C, T, and S bits in the DL205 CPU. For Modbus TCP, it maps coil and register addresses to PLC memory areas (user configurable). Up to 128 double words can be transferred per request. The client mode supports cyclic polling with intervals from 10 ms to 60 seconds. Peer-to-peer ECOM can share up to 1K words per scan.
Environmental and Compliance
Operating temperature: 0 to 60°C; storage: -20 to 70°C. Humidity: 5% to 95% non-condensing. The module is certified to CE, UL 508, and RoHS. It meets IEC 61131-2 for industrial control equipment. Vibration resistance: 2 g (10–55 Hz). The housing is rated IP20.
Compatibility
Works with any DL205 CPU (D2-230, D2-240, D2-250, D2-260) and can also be used in DL105 and DL305 racks with appropriate adapters. Multiple H2-ECOM100 modules can be installed in the same rack (up to 4). The module is not hot-swappable; power down before insertion.
Typical Applications
Common uses: connecting a DL205 PLC to an HMI touch panel (e.g., C-more), collecting production data into a SQL database via Modbus TCP, or synchronizing two conveyors using ECOM protocol. It is also used for remote monitoring via a plant intranet.
Ordering and Documentation
Part number: H2-ECOM100. The module is supplied with a quick start guide and a CD containing utility software. Full manual (DL205 User Manual – Chapter 5) available from AutomationDirect. The module has a 1-year warranty against manufacturing defects.
