Dual HART to MODBUS Conversion

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There are several reasons why users want two HART to MODBUS converters on one HART network that has up to 16 transmitters. Fortunately, HART protocol supports two masters; one must be declared the Primary Master and the other is assigned the Secondary Master role. The HES HART to Ethernet Gateway Sy
There are several reasons why users want two HART to MODBUS converters on one HART network that has up to 16 transmitters. Fortunately, HART protocol supports two masters; one must be declared the Primary Master and the other is assigned the Secondary Master role. The HES HART to Ethernet Gateway System and HCS HART Concentrator System HART-to-MODBUS RTU Converter both have configurable Primary and Secondary Master settings. That simply means that they communicate to HART devices in different polling intervals. Download the PDF file The HES has an Ethernet back-end using MODBUS/TCP protocol. The HCS outputs RS-485 serial with MODBUS RTU. One HART network could have two HCS, two HES, or one of each model. When you have two MODBUS Hosts with serial communications and each requires process variable and diagnostic data from all transmitters, you need two HCS units. As shown above, if you have two MODBUS masters with one being serial and the other being Ethernet, you would need one each of the HES and HCS. On critical networks, some users will have two converters for redundancy purposes. In this case, you could employ two HCS, two HES or one of each. Key attributes: Both HES and HCS are HART and MODBUS devices Both capable to operate as HART Primary Master or Secondary master Choose from Serial or Ethernet connectivity Check out the HES datasheet and Moore Industries Online catalog for more information and the HCS datasheet and online catalog page.