Simulation system communication method and simulation system
A technology of simulation system and communication method, applied in the field of simulation system communication method and simulation system, can solve problems such as simulation data error, communication failure, etc., and achieve the effect of automatic correction, improvement of anti-interference and stability
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Embodiment 1
[0025] figure 1 It is a flow chart of the simulation system communication method provided by Embodiment 1 of the present invention, figure 2 It is a schematic diagram of the top-level data flow of the slave device in the simulation system communication method provided by Embodiment 1 of the present invention, image 3 It is a schematic diagram of the message frame structure of the request message in the communication method of the simulation system provided by Embodiment 1 of the present invention. This method is applicable to the simulation system. Usually, the simulation system includes a master device and a slave device, and the master device and the slave device are connected through various communication methods , the slave device receives instructions from the master device to complete the simulation operation, and returns the simulation result to the master device. The method can be executed by the master device in the simulation system, and can be implemented in a so...
Embodiment 2
[0036] Figure 4 The flow chart of the simulation system communication method provided by Embodiment 2 of the present invention, this embodiment further optimizes the simulation system communication method on the basis of the above embodiments, and the method can be executed by the master device in the simulation system. Such as Figure 4 As shown, on the basis of the above-mentioned embodiments, the request-response message may also include: when the slave device judges that one or more of the slave device address, function code and sum check code in the request message is incorrect, return The exception function code. That is, the request-response message includes three kinds of messages, and the master device receives one of the messages and judges whether the receiving of the message times out. In the specific implementation process, the master device performs one of the following three steps:
[0037] Step 1021, the master device receives the abnormal function code ret...
Embodiment 3
[0058] Figure 5 It is a flow chart of the simulation system communication method provided by the third embodiment of the present invention. This embodiment further optimizes the simulation system communication method on the basis of the above embodiments, and the method can be executed by the slave device in the simulation system. Such as Figure 5 As shown, the simulation system communication method may include:
[0059] Step 201, the slave device receives the request message sent by the master device, and judges whether the request message is received timed out.
[0060] Specifically, when the slave device knows that the master device will send a request message, it immediately starts the timer to start counting, and starts to receive the request message sent by the master device. If the complete request message frame is received before the timer expires , it is considered that the request message has not timed out, and if the complete message frame of the request messag...
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