A communication protocol conversion device and conversion method
A communication protocol conversion and communication protocol technology, which is applied in the field of communication protocol conversion devices, can solve problems such as conversion device interference, achieve stable data transmission, avoid data congestion, and reduce interference
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Embodiment 1
[0031] Such as figure 1 The communication protocol conversion device shown includes: an ARM processor, used for communicating with the engineering station, using the same communication protocol as the engineering station to complete unpacking and packaging when communicating with the engineering station; FPGA module, using the same communication protocol as the engineering station The same communication protocol as the safety-level equipment is connected to the ARM processor and the first optical fiber module respectively; the FPGA module is used to receive the signal of the ARM processor and transmit it to the first optical fiber module after protocol conversion; it is used to receive the first optical fiber module. The signal of the optical fiber module is transmitted to the ARM processor after protocol conversion; the first optical fiber module is used to convert the electrical signal of the FPGA module into an optical signal, and communicate with the security level device t...
Embodiment 2
[0033] Such as figure 1 and figure 2 A communication protocol conversion device shown, wherein figure 2 The middle box part represents the signal transmission relationship inside the FPGA module. In this embodiment, on the basis of Embodiment 1, a level conversion device is connected between the FPGA module and the first optical fiber module, and the level conversion device is used to convert the signal of the FPGA module into a differential level signal. Also includes a physical layer chip, the physical layer chip is connected to the ARM processor and the second optical fiber module respectively; the physical layer chip is used to convert the digital signal of the ARM processor into a level signal, and the second optical fiber module uses It is used to convert the level signal of the physical layer chip into an optical signal for external transmission. The ARM processor and the FPGA module are connected through an external memory interface. An optical fiber is used as a...
Embodiment 3
[0035] A communication protocol conversion method, using an ARM processor with the same communication protocol as the engineer station; an FPGA module with the same communication protocol as the safety level equipment; conversion includes downloading process, feedback process:
[0036] Downloading process: the ARM processor is used to receive the signal from the engineer station, and the ARM processor unpacks it and transmits it to the FPGA module, and the FPGA module repackages the data according to its own communication protocol and transmits it to the first optical fiber module, The first optical fiber module converts the received electrical signal into an optical signal and transmits it to the safety level equipment;
[0037] Feedback process: The safety-level device sends a status data packet to the first optical fiber module, the first optical fiber module converts the data packet from an optical signal to an electrical signal and then transmits it to the FPGA module, and...
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