MOBDUS RTU is the established Australian and New Zealand standard system for controlling actuators and sensors due to its open and simple protocol.
The support for MODBUS RTU by ebm-papst’s GreenTech EC fans and motors makes it very easy to solve automation tasks in shopping centres, retail outlets, commercial buildings as well as telecom and data situations when combined with numerous approved programmable logic controllers.
MODBUS RTU is the ideal basis for data transfer when integrating ebm-papst EC fan technology in open and closed loop control processes, during which communication happens on three levels.
Primary Level - BACNET
The level at which all data runs together into the heart of the monitoring and control, the primary level is typically the high level building control system.
Field automation level – BACNET to MODBUS
The control centre for application areas such as chillers, condensers and air handling units among others, each of these systems has PLC, which will handshake with the field level products.
Field level – MODBUS handshake control
Field level controllers talk directly to GreenTech EC fans to ensure optimum system performance as directed by the primary level building control system. Handshaking control with MODBUS RTU allows demand control of fans as well as feedback and power monitoring information.