For HART communication on the DA7, you can either connect between the C-B terminals (when not using the transmitter power supply) or between the A-C terminals (when using the transmitter power supply).
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JUXTA D Series Signal Conditioners
The D Series is DCS-supported signal conditioners, consisting of modular type signal converters with versatile I/O specifications and housing nest. JIS and EIA conformed mounting nests come with terminal blocks for field wiring, connectors for DCS connection, and connectors for communications.