CN116865846A - Method for responding to optical fiber link switching value transmission command - Google Patents
Method for responding to optical fiber link switching value transmission command Download PDFInfo
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- CN116865846A CN116865846A CN202310983463.3A CN202310983463A CN116865846A CN 116865846 A CN116865846 A CN 116865846A CN 202310983463 A CN202310983463 A CN 202310983463A CN 116865846 A CN116865846 A CN 116865846A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000013307 optical fiber Substances 0.000 title claims abstract description 31
- 230000004044 response Effects 0.000 claims abstract description 60
- 230000002159 abnormal effect Effects 0.000 claims abstract description 10
- 238000010586 diagram Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
- H04Q2011/0083—Testing; Monitoring
Abstract
The application provides a response method for a switching value transmission command of an optical fiber link, which comprises the following steps: the host sends a command sequence to the slave; when the host receives a response sequence sent by the slave, and when judging that the response sequence is consistent with the information identification in the command sequence, controlling one or more data sequences to be transmitted between the host and the slave, wherein the data sequences comprise a plurality of data frames corresponding to the information requirements; one of the host and the slave is used as a transmitting end, and the other is used as a receiving end; after receiving a data sequence, the receiving end sends a feedback sequence to the sending end, wherein the feedback sequence comprises a data check code and the running state of the receiving end; after receiving the feedback sequence, the sending end repeatedly sends the last data sequence when judging that the data check code has errors; and stopping sending the data sequence when the running state of the receiving end is judged to be abnormal. The method provided by the application ensures the high transmission speed of the optical fiber link and simultaneously ensures the reliability and the safety of the optical fiber link.
Description
Technical Field
The disclosure relates to the technical field of FPGA (field programmable gate array) optical fiber link communication and relay control, in particular to an optical fiber link switching value transmission command response method.
Background
With the continuous development of digital communication systems, FPGAs (Field-Programmable Gate Array, field programmable gate arrays) have been widely used in many fields, and with the continuous maturation of technology, FPGAs are increasingly used in the Field of optical fiber communication, and developers have described high-speed serial transceivers by hardware description language and encapsulated special IP cores into FPGAs for users to use. The optical fiber link is used for transmitting switching value data to control the relay, but the relay has the advantages of high transmission speed, and can reach the speed of more than 10Gbit/s, and the relay is particularly suitable for occasions with high real-time requirements, but the transmission speed has the disadvantage that the link transmission reliability is reduced, so that a command response mechanism of data transmission needs to be developed according to the characteristics of optical fiber link transmission, and the reliability and the safety are particularly important while the transmission speed is high.
Disclosure of Invention
In view of the foregoing drawbacks or shortcomings in the prior art, it is desirable to provide a fiber link switching amount transmission command response method that addresses the foregoing problems.
The application provides a response method for a switching value transmission command of an optical fiber link, which comprises the following steps:
the method comprises the steps that a host sends a command sequence to a slave, wherein the command sequence comprises an information identifier and an information requirement, and the information identifier is used for mutual identification between the host and the slave;
the host judges that the response sequence sent by the slave is received in a first preset time, and the response sequence is identified;
when the host judges that the information identification in the response sequence is consistent with the information identification in the command sequence, the host controls the data sequence transmission between the host and the slave, wherein the data sequence comprises a plurality of data frames corresponding to the information requirement; in the data sequence transmission process, one of the host and the slave is used as a transmitting end, and the other is used as a receiving end;
after the receiving end receives one data sequence and judges that all data frames corresponding to the information requirement are not received, the receiving end sends a feedback sequence to the sending end, wherein the feedback sequence comprises a data check code and the running state of the receiving end;
after the sending end receives the feedback sequence, when judging that the data check code has errors, repeatedly sending the last data sequence; and stopping sending the data sequence when the running state of the receiving end is judged to be abnormal.
According to the technical scheme provided by the embodiment of the application, the method further comprises the following steps:
the receiving end judges that after receiving all data frames corresponding to the information requirement, the receiving end sends a termination sequence to the sending end;
and the transmitting end stops transmitting the data sequence after judging that the termination sequence is received within the second preset time.
According to the technical scheme provided by the embodiment of the application, when the host judges that the information identification in the response sequence is inconsistent with the information identification in the command sequence, the response sequence is discarded.
According to the technical scheme provided by the embodiment of the application, the data sequence is transmitted between the host and the slave, and the data sequence comprises a read command mode and a write command mode;
when in the write command mode, the host is used as the transmitting end, and the slave is used as the receiving end;
when in the read command mode, the slave acts as the transmitting end, and the host acts as the receiving end.
According to the technical scheme provided by the embodiment of the application, when the transmitting end transmits the data frame to the receiving end, the method specifically comprises the following steps:
when the sending end judges that the total number of bytes of a plurality of data frames is smaller than or equal to a set byte number, the data frames are sent to the receiving end through a data sequence, and the set byte number is the maximum number of bytes included in one data sequence;
and when the transmitting end judges that the total number of bytes of a plurality of data frames is larger than the set byte number, the data frames are transmitted in a plurality of data sequences.
According to the technical scheme provided by the embodiment of the application, when the sending end sends data to the receiving end, the method further comprises the following steps:
the sending end obtains a first count value, and stops sending the data sequence when judging that the first count value is larger than or equal to a preset credit value; the first count value is the number of frames of the data frames sent by the sending end but not received by the receiving end, and the preset credit value is the number of frames of the data frames which are allowed by the receiving end and are buffered at the maximum;
and when the transmitting end judges that the first count value is smaller than the preset credit value, continuing to transmit the data sequence.
According to the technical scheme provided by the embodiment of the application, the command sequence also comprises a CRC check code and the running state of the host; the response sequence includes a CRC check code and an operational status of the slave.
According to the technical scheme provided by the embodiment of the application, the termination command further comprises a CRC (cyclic redundancy check) code and the running state of the receiving end.
According to the technical scheme provided by the embodiment of the application, the method further comprises the following steps:
and after the host receives the response sequence, when the running state of the slave is abnormal, prohibiting data sequence transmission between the host and the slave, and prompting the check of the slave.
Compared with the prior art, the application has the beneficial effects that: when data transmission is needed between the host and the slave, a command sequence comprising information representation and information requirements is sent to the slave through the host, so that the slave can know the data to be transmitted according to the information requirements; the slave machine sends the response sequence to the host machine, so that when the host machine judges that the response sequence is consistent with the information identification of the command sequence, the established connection between the host machine and the slave machine is determined, and the accuracy of information transmission is improved; when data is transmitted between a host and a slave, after a receiving end receives one data sequence and judges that all data frames corresponding to the information requirement are not received, a feedback sequence is sent to a sending end, so that each data sequence can be fed back correspondingly when the sending end repeatedly sends the data sequence, and the sending end can judge whether to continue sending the data sequence, stop sending the data sequence or resend the data sequence according to the obtained feedback, thereby improving the reliability and safety of data transmission while ensuring that an optical fiber link is high in transmission speed.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
FIG. 1 is a flow chart of the steps of the method for responding to the command for transmitting the switching value of the optical fiber link;
FIG. 2 is a schematic diagram of data transfer between a master and a slave in a write command mode;
FIG. 3 is a schematic diagram of data transfer between a master and a slave in a read command mode;
FIG. 4 is a schematic diagram of a fiber link switch quantity transmission command response system;
FIG. 5 is a schematic diagram illustrating a state switch between a data frame FIFO and a frame information FIFO in a sending module;
fig. 6 is a state switching diagram of primitive FIFOs in a transmitting module.
Detailed Description
The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the application are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1, the present application provides a method for responding to a command transmitted by a switching value of an optical fiber link, comprising the following steps:
s1, a host sends a command sequence to a slave, wherein the command sequence comprises an information identifier and an information requirement, and the information identifier is used for mutual identification between the host and the slave;
s2, the host judges that the response sequence sent by the slave is received in a first preset time, and the response sequence is identified;
s3, when the host judges that the information identification in the response sequence is consistent with the information identification in the command sequence, one or more data sequences are transmitted between the host and the slave, wherein the data sequences comprise a plurality of data frames corresponding to the information requirements; in the data sequence transmission process, one of the host and the slave is used as a transmitting end, and the other is used as a receiving end;
s4, after the receiving end receives one data sequence and judges that all data frames corresponding to the information requirement are not received, a feedback sequence is sent to the sending end, and the feedback sequence comprises a data check code and the running state of the receiving end;
s5, after the sending end receives the feedback sequence, when judging that the data check code has errors, repeatedly sending the last data sequence; and stopping sending the data sequence when the running state of the receiving end is judged to be abnormal.
Specifically, the host computer and the slave computer are connected through an optical fiber link, and data transmission is performed through the optical fiber link.
Specifically, step S2 further includes the following steps:
and when the host judges that the information identification in the response sequence is inconsistent with the information identification in the command sequence, discarding the response sequence.
Further, after step S5, the method further comprises the following steps:
the receiving end receives all the data frames corresponding to the information requirement and then sends a termination sequence to the sending end;
and the transmitting end stops transmitting the data sequence after judging that the termination sequence is received within the second preset time.
Further, the data sequence is transmitted between the host and the slave, and the data sequence comprises a read command mode and a write command mode;
when in the write command mode, the host is used as the transmitting end, and the slave is used as the receiving end;
when in the read command mode, the slave acts as the transmitting end, and the host acts as the receiving end.
Specifically, referring to fig. 2 and 3, when in the write command mode, the host first sends a command sequence to the slave; after the slave receives the command sequence, generating a corresponding sequence according to the command sequence and sending the corresponding sequence back to the host; if the host computer does not receive the response sequence within the first preset time, the host computer sends a command sequence to the slave computer again, and if the host computer does not receive the response sequence within the first preset time, the host computer prompts that the system fault needs to be checked; if the host receives the response sequence in the first preset time, the host identifies the response sequence, the response sequence also comprises an information identifier, and when the host judges that the information identifier in the response sequence is identical to the information identifier in the command sequence, the host generates an execution signal for transmitting the data sequence, and the host is used as a transmitting end to directly transmit the data sequence to the slaves one by one because of the current writing command mode; after each time the slave receives one data sequence, comparing the received data frames with all data frames corresponding to the information requirement, and if the number of the received data frames is less than that of all data corresponding to the information requirement, generating a feedback sequence and sending the feedback sequence to the host so as to inform the host of which data frames are received; after receiving the feedback sequence, the host judges whether the data check code in the feedback sequence is wrong, if the data check code is wrong, the host repeatedly sends the data sequence corresponding to the feedback sequence once, and if the data check code is not wrong, the host continues to send the next data sequence; after the host receives the feedback sequence, the host also judges whether the running state of the slave in the feedback sequence is abnormal, if the running state of the slave is abnormal, the host stops sending the data sequence, and if the running state of the slave is not abnormal, the host continues sending the data sequence.
When in the read command mode, the same steps as those of the write command mode are not described herein, and the difference is that: the host is used as a receiving end of the data sequence, and the slave is used as a transmitting end of the data sequence; when the host judges that the information identification in the response sequence is the same as the information identification in the command sequence, the host generates an execution signal of data sequence transmission and sends the execution signal to the slave, and then the slave is used as a transmitting end to send the data sequence to the host one by one.
Working principle: when data transmission is needed between the host and the slave, a command sequence comprising information representation and information requirements is sent to the slave through the host, so that the slave can know the data to be transmitted according to the information requirements; the slave machine sends the response sequence to the host machine, so that when the host machine judges that the response sequence is consistent with the information identification of the command sequence, the established connection between the host machine and the slave machine is determined, and the accuracy of information transmission is improved; when data is transmitted between a host and a slave, after a receiving end receives one data sequence and judges that all data frames corresponding to the information requirement are not received, a feedback sequence is sent to a sending end, so that each data sequence can be fed back correspondingly when the sending end repeatedly sends the data sequence, and the sending end can judge whether to continue sending the data sequence, stop sending the data sequence or resend the data sequence according to the obtained feedback, thereby improving the reliability and safety of data transmission while ensuring that an optical fiber link is high in transmission speed.
In a preferred embodiment, the sending method specifically includes the following steps when the sending end sends the data frame to the receiving end:
when the sending end judges that the total number of bytes of a plurality of data frames is smaller than or equal to a set byte number, the data frames are sent to the receiving end through a data sequence, and the set byte number is the maximum number of bytes included in one data sequence;
and when the transmitting end judges that the total number of bytes of a plurality of data frames is larger than the set byte number, the data frames are transmitted in a plurality of data sequences.
Specifically, in this embodiment, the set number of bytes is 2048, that is, each data sequence contains 2048 bytes of data at most; if the sending end judges that the total number of bytes of all the data frames is less than 2048 bytes, all the data frames are sent to the receiving end through one data sequence; if the sending end judges that the total number of bytes of all the data frames is larger than 2048 bytes, all the data frames are divided into a plurality of data sequences to be sent to the receiving end one by one, and each data sequence is ensured to contain 2048 bytes. Because the receiving end correspondingly generates a feedback sequence every time one data sequence is received, so that each data sequence is checked, all data frames are transmitted in a plurality of data sequences, each data sequence is ensured to contain less data, and when the data in one data sequence is wrong, the data sequence is only required to be retransmitted; compared with the method that all data frames are simultaneously transmitted to the receiving end at one time, the method has the advantages that data can be conveniently checked after being separately transmitted, and therefore data transmission efficiency and reliability are improved.
In a preferred embodiment, when the transmitting end transmits data to the receiving end, the method further includes the following steps:
the sending end obtains a first count value, and stops sending the data sequence when judging that the first count value is larger than or equal to a preset credit value; the first count value is the number of frames of the data frames sent by the sending end but not received by the receiving end, and the preset credit value is the number of frames of the data frames which are allowed by the receiving end and are buffered at the maximum;
and when the transmitting end judges that the first count value is smaller than the preset credit value, continuing to transmit the data sequence.
Specifically, before the transmitting end transmits the data sequence to the receiving end, the transmitting end firstly acquires a first count value, wherein the first count value is increased by 1 when the transmitting end transmits one data frame on a link, and the first count value is decreased by 1 when the transmitting end receives a confirmation primitive of one data frame of the receiving end; then comparing the first count value with a preset credit value of a receiving end, and stopping sending the data sequence by a sending end when the sending end judges that the first count value is larger than or equal to the preset credit value and the buffer empty of the receiving end is insufficient; and when the sending end judges that the first count value is smaller than the preset credit value, the buffer space representing the receiving end is enough, and the sending end continues to send the data sequence. By the method provided by the embodiment, the sending of the data frame is conveniently controlled so that the other end of the link has enough buffer, and the data frame is prevented from being discarded because the receiving end has insufficient buffer space.
In a preferred embodiment, the command sequence further includes a CRC check code and an operating status of the host; the response sequence includes a CRC check code and an operational status of the slave.
In a preferred embodiment, the termination command further includes a CRC check code and an operation status of the receiving end.
In a preferred embodiment, the method further comprises the steps of:
and after the host receives the response sequence, when the running state of the slave is abnormal, prohibiting data sequence transmission between the host and the slave, and prompting the check of the slave.
Further, referring to fig. 4, the method for responding to the optical fiber link switching value transmission command is implemented based on an optical fiber link switching value transmission command responding system, the system comprises a host and a slave, the host and the slave are connected through an optical fiber link, a transmitting module is arranged between the host and the optical fiber link and between the slave and the optical fiber link, the transmitting module comprises a data frame FIFO, a frame information FIFO and a primitive FIFO, and the FIFOs are respectively used for buffering data frames, frame information and primitives; the frame information FIFO includes two sub-functions of transmitting command frames and transmitting response frames. The sending module is used for reading data from the upstream module into the FIFO corresponding to the sending module, and then dispatching the primitive and the data to the optical fiber link.
In a preferred embodiment, the sending module further comprises a counter for counting the first count value.
The working process of the system comprises the following steps:
as shown in fig. 5, the initial state is entered when the system is reset;
detecting state change at initial state moment, when frame information FIFO of sending command frame in sending module is not empty, reading enabling is effective (indicating data frame FIFO in sending module can also hold a maximum frame) and frame information FIFO in sending module invalidates full signal, entering into reading command packet information state;
at the same time, the frame information FIFO of the sending response frame in the sending module is not empty, the reading enabling is effective (which means that the data frame FIFO in the sending module can also accommodate a maximum frame) and the frame information FIFO in the sending module invalidates the full signal, and enters into the reading response packet information state;
further, maintaining a clock period in the read command packet state or the read response packet information state, reading the information data of the information FIFO in the state, and entering a command packet/response packet data pre-reading state, wherein the sending module caches the data frames and frame information of the upstream module in the corresponding FIFO;
further, maintaining a clock period in the command packet/response packet data pre-reading state, and in this state, after the data in the command packet/response packet technical state is read, entering into a read command packet/response packet data state;
further, when the data state of the read command packet/response packet needs to maintain the data frame length for a clock period, finishing reading the data in the FIFO of the command packet/response packet, and entering the end state of the read command packet/response packet;
further, detecting a change of state at the end state of the read command packet/response packet, when the frame information FIFO of the transmission response frame in the transmission module is not empty, the read enable is valid (indicating that the data frame FIFO in the transmission module can also accommodate a maximum frame) and the frame information FIFO in the transmission module invalidates the full signal, entering into the read response packet information state, at the same time, the frame information FIFO of the transmission command frame in the transmission module is not empty, the read enable is valid (indicating that the data frame FIFO in the transmission module can also accommodate a maximum frame) and the frame information FIFO in the transmission module invalidates the full signal, entering into the read command packet information state, the detection action of the state is basically consistent with the initial state, the only difference is that the priority for detection of the command packet and the response packet is different, the command packet is preferentially detected in the initial state, and the response packet is preferentially detected in the state;
further, a read command packet/response packet information state is entered and a loop is performed. The method can carry out polling detection on command packet/response packet data, and prevent data in one FIFO from being blocked due to the fact that data reading can not be detected for a long time.
In addition, when data is sent to the optical fiber link, the sending module needs to complete the periodic sending function, and the sending is also controlled by a state machine, so that the sending of the primitives and the data frames is mainly scheduled, wherein the primitives have high priority, the sending state machine is as shown in fig. 6, and the state transition conditions are as follows:
when the system is reset, the system enters an initial state, the state change is detected at the moment of the initial state, and when the primitive FIFO is not empty, the system enters a primitive reading state;
further, the data read space in the primitive FIFO is sent to the optical fiber link;
further, returning to the initial state, if the primitive FIFO is empty and the data frame FIFO and the frame information FIFO are not empty, entering a read data information state;
further, reading data of the frame information FIFO, and entering a data reading state after maintaining one clock period;
further, the data frame length is maintained for a clock period in the data reading state, the data in the data frame FIFO is read out and sent to the optical fiber link, and the data enters the ending state, so that one-time cyclic sending is completed.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.
Claims (9)
1. The method for responding the optical fiber link switching value transmission command is characterized by comprising the following steps:
the method comprises the steps that a host sends a command sequence to a slave, wherein the command sequence comprises an information identifier and an information requirement, and the information identifier is used for mutual identification between the host and the slave;
the host judges that the response sequence sent by the slave is received in a first preset time, and the response sequence is identified;
when the host judges that the information identification in the response sequence is consistent with the information identification in the command sequence, the host controls one or more data sequences to be transmitted between the host and the slave, wherein the data sequences comprise a plurality of data frames corresponding to the information requirements; in the data sequence transmission process, one of the host and the slave is used as a transmitting end, and the other is used as a receiving end;
after the receiving end receives one data sequence and judges that all data frames corresponding to the information requirement are not received, the receiving end sends a feedback sequence to the sending end, wherein the feedback sequence comprises a data check code and the running state of the receiving end;
after the sending end receives the feedback sequence, when judging that the data check code has errors, repeatedly sending the last data sequence; and stopping sending the data sequence when the running state of the receiving end is judged to be abnormal.
2. The optical fiber link switching value transmission command response method according to claim 1, further comprising the steps of:
the receiving end judges that after receiving all data frames corresponding to the information requirement, the receiving end sends a termination sequence to the sending end;
and the transmitting end stops transmitting the data sequence after judging that the termination sequence is received within the second preset time.
3. The method according to claim 2, wherein the host computer discards the response sequence when it determines that the information identifier in the response sequence is inconsistent with the information identifier in the command sequence.
4. The method according to claim 3, wherein the data sequence transmitted between the master and the slave includes a read command mode and a write command mode;
when in the write command mode, the host is used as the transmitting end, and the slave is used as the receiving end;
when in the read command mode, the slave acts as the transmitting end, and the host acts as the receiving end.
5. The method for responding to the command for transmitting the switching value of the optical fiber link according to claim 4, wherein the transmitting terminal transmits the data frame to the receiving terminal, specifically comprising the steps of:
when the sending end judges that the total number of bytes of a plurality of data frames is smaller than or equal to a set byte number, the data frames are sent to the receiving end through a data sequence, and the set byte number is the maximum number of bytes included in one data sequence;
and when the transmitting end judges that the total number of bytes of a plurality of data frames is larger than the set byte number, the data frames are transmitted in a plurality of data sequences.
6. The method for responding to a command for switching a transmission command of an optical fiber link according to claim 5, wherein when the transmitting end transmits data to the receiving end, the method further comprises the steps of:
the sending end obtains a first count value, and stops sending the data sequence when judging that the first count value is larger than or equal to a preset credit value; the first count value is the number of frames of the data frames sent by the sending end but not received by the receiving end, and the preset credit value is the number of frames of the data frames which are allowed by the receiving end and are buffered at the maximum;
and when the transmitting end judges that the first count value is smaller than the preset credit value, continuing to transmit the data sequence.
7. The method of claim 6, wherein the command sequence further comprises a CRC check code and an operating status of the host; the response sequence includes a CRC check code and an operational status of the slave.
8. The method of claim 7, wherein the termination command further includes a CRC check code and an operation state of the receiving end.
9. The optical fiber link switching value transmission command response method according to claim 8, further comprising the steps of:
and after the host receives the response sequence, when the running state of the slave is abnormal, prohibiting data sequence transmission between the host and the slave, and prompting the check of the slave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310983463.3A CN116865846A (en) | 2023-08-04 | 2023-08-04 | Method for responding to optical fiber link switching value transmission command |
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| CN202310983463.3A CN116865846A (en) | 2023-08-04 | 2023-08-04 | Method for responding to optical fiber link switching value transmission command |
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