Modbus RTU Communication

Acromag's BusWorks 900MB Series is a high-performance collection of analog and discrete I/O modules and relay alarm outputs. Industrial Modbus RTU (Remote Terminal Unit) serial transmission mode.  These units feature universal input/output ranges and an intelligent microcontroller to provide extreme flexibility and powerful monitoring and control capabilities. These Modbus RTU modules are ideal for a wide variety of distributed I/O applications including data acquisition, control, process monitoring, and test & measurement.

Modbus BusWorks 900MB - Continued

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Modbus devices communicate using a master-slave technique in which only one device (the master) can initiate transactions (called queries). The other devices (slaves) respond by supplying the requested data to the master, or by taking the action requested in the query. A slave is any peripheral device (I/O transducer, valve, network drive, or other measuring device) which processes information and sends its output to the master using Modbus. Acromag Series 900MB I/O Modules are slave devices, while a typical master device is a host computer running appropriate application software.