As the latest in the vendor’s line of BusWorks Ethernet I/O modules for distributed I/O and SCADA, the 993EN and 994EN models provide a 16-channel, 16-bit A/D interface for single-ended analog voltage or current input signals.
The space-saving, inch-wide units are said to make it easy to retrofit older control systems for Ethernet Modbus TCP/IP networking and greatly reduce the cost per channel in new installations. Users can select industrial-grade or commercial versions (starting under $500) for significant savings in applications that do not need the extra performance and safety approvals. Industrial-grade units add superior accuracy, a signal integrator/totalizer function, -40 to 70°C capability, and are designed to meet UL/cUL Class 1 Division 2 ABCD (Zone 2) requirements. Two models, each with 16 single-ended analog inputs, support a variety of I/O ranges.
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