RS485 sends messages through the NiMotion protocol to control motor operation
1. NiMotion Protocol
1. The Modbus protocol has been optimized, with two new message formats (Process Data Message and Synchronization Message) created based on Modbus. These two message formats enable multi-command control, significantly reducing data processing time, improving the coordination of multi-motor control, and further enabling pairwise synchronization of motors. Process Data Messages are used to combine multiple parameters into a single message frame for simultaneous transmission and reception, while Synchronization Messages control the timing of command execution. The following example illustrates the use of Process Data Messages.
2. Process Data Message Transmission Format
3. Process data message reading format
2. Process Data Message Use Cases
1. In PV speed mode, only one message is sent to control the motor's start and stop at different speeds.
First, enter the required parameters in registers H5000 to H5018, as needed.
Then, based on the PV speed mode start message, control word H0380 sends 06-07-0F, and the stop message sends 07. Compile the process data message, paying attention to the message format.
2. In PV speed mode, only one message is sent to read the motor's current mode, operating status, position, and speed feedback.
First, fill the H6000-H6018 register addresses with the required parameters.
Send a process data message to read the data.
