Encoder data acquisition module and method for multi-protocol compatible multi-industrial Ethernet bus

Abstract

The invention relates to the field of industrial control networks, and provides an encoder data acquisition module and method for a multi-protocol compatible multi-industrial Ethernet bus aiming at the problems existing in the prior art. By adopting the module and method, the seamless conversion from the encoder data signal for the multi-interface protocol to the standard network port signal or the signal that supports the industrial Ethernet protocol can be achieved, and the difficulties of designing the communication scheme of the industrial control system can be reduced. The method comprises the following steps: a data acquisition module receives n encoder data signals through an encoder module, and sends the encoder data signal to a protocol conversion module through the encoder module; a toggle switch module sets the types of the output general Ethernet or industrial Ethernet protocol and the resolving power of an encoder, and delivers the Ethernet protocol type that is selected and the high-low signals of the set resolving power of the encoder to the protocol conversion module; and the protocol conversion module automatically matches the corresponding Ethernet protocol, selects a proper Ethernet transmission channel for the received encoder data signals, and transmits the signals after converting the signals to the Ethernet signals.

Description

technical field [0001] The invention relates to the field of industrial control networks, in particular to a multi-protocol compatible multi-industrial Ethernet bus encoder data acquisition module and method. Background technique [0002] In the field of industrial control, the encoder's effective acquisition, transmission and processing of the position and speed signals of the control system is the basis for ensuring that the control system achieves high-precision control. [0003] There are many types of encoders used in the market, and encoder manufacturers usually use custom interfaces and protocols for signal transmission. The communication interfaces usually used in the field of industrial control are RS422 and RS485 or Ethernet interfaces, whether it is RS485, RS422 Or the Ethernet interface is an international standard interface. Directly reading the encoder data in the closed-loop control system often has an interface or protocol incompatibility. Therefore, converti...

AI Technical Summary

Problems solved by technology

It avoids the situation that the encoder signal cannot be transmitted due to the incompatibility of the communication interface or the signal transmission is unstable caused by the modified industrial network communication interface

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