Opto 22 I/O with HART communications protocol
The Snap-AIMA-iH analog input module and Snap-AOA-23-iH output module use the HART communications protocol to extract status, diagnostics and other information from smart devices such as field-mounted process transmitters and analyzers. Automation systems and asset management systems can use the information to increase uptime, improve productivity and enhance safety. The input module has two isolated 4–20 mA input channels. The output module has two isolated 4–20 mA output channels. Each channel features an integrated HART modem that allows the channel to communicate digitally with the HART frequency-shift keying (FSK) signal imposed on the 4–20 mA current loop, enabling communication with the target smart device.