Modbus is a strong and mature fieldbus system. It was originally implemented for serial interfaces with Modbus RTU and later
extended to TCP communication. The Modbus standard defines the communication as 16 bit integer values transferred between systems. Modbus’ flexibility and reliability is why it is widely used in old as well as new installations.
Modbus enables communication among many devices connected to the same network. The Modbus communication protocol can be used for the retrieval/exposure of turbine data used in conjunction with the TCM® M-Systems.
Modbus TCP Slave
Enables the M-System to expose operational data (i.e. scalar measurements) to a Modbus Master.
With the Modbus TCP Slave, scalar measurements and their alarm states can be read directly from the M-System. Operational values may also be pushed into the M-System. This has endless possible uses depending on what task the M-System is performing.
Modbus TCP Master
A functionality for extracting turbine’s condition-based information from Modbus Slave. An example of its use would be the obtainment of measurements such as active power from the bottom of the turbine.
This allows information from non-Gram & Juhl hardware such as active power or wind speed to be acquired in locations that otherwise would be inaccessible to the M-System.