Ethernet I/O module mixes analog, discrete
BusWorks 951EN Series Ethernet I/O modules
Acromag ’s new, $695, 12-channel, remote-I/O modules feature analog inputs and outputs and bi-directional discrete I/O-channels. The 951EN and 952EN “Combo” Ethernet I/O modules channels include: four analog inputs, two analog outputs, and six discrete input/output, on a single inch-wide unit.
This mix of I/O can reduce costs significantly by replacing the need to buy three I/O modules. The modules support Ethernet/IP and Modbus TCP/IP protocols, as well as Acromag’s own i2o technology. The i2o (input-to-output) function allows input channels on one module to send measured signal data directly to output channels on a remote module across any Ethernet media without a PLC, PC, or other controller. Combo modules have inputs and outputs, functioning as transmitters and receivers to independently interface signals across the plant or worldwide.
Each I/O module has a Ethernet Modbus TPC/IP-port making easily interconnecting modules via up to 100 m of CAT5 cable. A standard Web browser and simple configuration menu maps each input channel to an IP address and register for the output module.
All units have CE approvals and UL/cUL listing for Class I Division-2 installations, using standard 12-36 V dc power supplies. Watchdog timers continuously monitor network communications while self-diagnostic routines simplify maintenance and troubleshooting.
— Richard Phelps, senior editor, Control Engineering
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