CN106201964B - The on-line automatic addressing of RDM driver and RDM bus short circuit positioning device and method - Google Patents
The on-line automatic addressing of RDM driver and RDM bus short circuit positioning device and method Download PDFInfo
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- CN106201964B CN106201964B CN201610553208.5A CN201610553208A CN106201964B CN 106201964 B CN106201964 B CN 106201964B CN 201610553208 A CN201610553208 A CN 201610553208A CN 106201964 B CN106201964 B CN 106201964B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
- G06F13/4072—Drivers or receivers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0751—Error or fault detection not based on redundancy
- G06F11/0754—Error or fault detection not based on redundancy by exceeding limits
- G06F11/0757—Error or fault detection not based on redundancy by exceeding limits by exceeding a time limit, i.e. time-out, e.g. watchdogs
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0793—Remedial or corrective actions
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
Abstract
The invention discloses a kind of on-line automatic addressings of RDM driver and bus short circuit positioning device and method, including master controller, RDM bus and multiple RDM drivers, multiple RDM drivers to be articulated in the RDM bus as controlled device；Multiple RDM drivers include RDM main control chip, control relay circuit and communication module, the control relay circuit be equipped with relay dynamic contact DAI/DBI, normally-closed contact DAO/DBO, the both ends biasing resistor R44 connection normally opened contact and relay control port, the relay dynamic contact DAI/DBI and the normally-closed contact DAO/DBO are connect with the RDM bus, the relay control port is connect with the RDM main control chip of the relay, and the both ends of the communication module are connect with RDM bus and RDM main control chip respectively.
Description
Technical field
The present invention relates to information control technology fields, and in particular to the on-line automatic addressing of RDM driver and RDM bus short circuit
Positioning device and method.
Background technique
RDM(Remote Device Management, remote device management) standard with its efficient information interaction approach,
Simple RDM bus structures are used widely in fields such as Landscape Lighting, light of stage controls.Simplest RDM system by
Main controller, RDMRDM bus and multiple drivers are constituted, and RDM agreement provides system in normal work, and main controller passes through
RDMRDM bus RDM control command can be transmitted to driver and DMX512 dims data.
The difference of data is transmitted according to system, two class addresses need to be arranged for each driver: the first kind is equipment UID
The address (Unique ID), the RDM control command which receives for identification, when driver UID and received RDM is controlled
When target UID included in order is consistent, driver just responds the order, and equipment UID dispatches from the factory in each RDM equipment
It is preceding to be provided with, without change after setting；Second class is DMX512 initial address, what which received for identification
DMX512 dims data, and main controller needs 1 ~ 512 frame of transmission to dim data to driver for lamp at regular intervals in RDM system
Tool is adjusted, and each corresponding paths of LEDs of frame light modulation data dims channel, after driver receives DMX512 light modulation data, according to
DMX512 initial address and LED light modulation port number combine, and can determine the frame number that need to receive light modulation data, DMX512 initial address
It is before factory and not set, it need to be configured and modify when driver works.
At present there are mainly two types of the DMX512 initial address write methods of driver:
(1) offline independent addressing: the addressing mode is when some driver need to address, by the driver from control scene
It takes out, is independently addressed using dedicated addressing device, driver is taken back to control scene again again after the completion of addressing.Which exists
Addressed when number of drives is less it is simple, but when number of drives is more and needs modified address addressing heavy workload, time-consuming,
And it is easy to appear leak the mistakes such as to compile or rearrange；
(2) increase the port I/O mode address: the addressing mode be by driver hardware circuit increase the port I/O,
It realizes respectively as input/output control port and addresses one by one online.This method except need RDMRDM bus as communication line in addition to
It also needs to increase the port I/O line as input/output control line, makes troubles for site operation, increases construction cost.
System enters normal mode of operation after the completion of the addressing of RDM driver, and system may generate various failures at this time,
These failures can be divided into two classes: one kind is the failure for not influencing RDM bus communication, and there are many producing cause of such failure, but
The normal communication that will not influence entire RDM system, enables a system to work on；Another kind of is to influence the event of RDM bus communication
Barrier, it includes failure caused by RDM bus itself short circuit and equipment input line or node short circuit, which will will lead to whole
A RDM bus can not communicate, and system can not work on, and since RDMRDM bus node is more, so that fault point detection ten
Divide difficulty, traditional RDM bus short circuit detection method needs to detect node by node by external detection equipment mostly, and this mode is imitated
Rate is low, poor reliability, seriously affects fault detection efficiency.
In conclusion the on-line automatic addressing of a kind of low cost, efficient RDM driver and RDM bus short circuit positioning side
Method seems very necessary.
Summary of the invention
For overcome the deficiencies in the prior art, be more efficiently completed driver DMX512 initial address write it is total with RDM
Line short trouble is searched, and the present invention each provides a kind of on-line automatic addressing of RDM driver and RDM bus short circuit positioning device
And method.
In order to achieve the above objectives, technical scheme is as follows:
A kind of on-line automatic addressing of RDM driver and RDM bus short circuit positioning device, including master controller, RDM bus and
Multiple RDM drivers, multiple RDM drivers are connect with RDM bus, and multiple RDM drivers are as controlled device
It is articulated in the RDM bus；
The input terminal of the RDM bus is connect with the master controller；
Between multiple RDM drivers according to order of connection volume be followed successively by the first RDM driver, the 2nd RDM driver,
3rd RDM driver ... N driver, the N are positive integer；
Multiple RDM drivers include RDM main control chip, control relay circuit and communication module, the relay
Control circuit is equipped with relay dynamic contact DAI/DBI, normally-closed contact DAO/DBO, biasing resistor R44 and relay control terminal
Mouthful, the relay dynamic contact DAI/DBI and the normally-closed contact DAO/DBO connect with the RRDM bus, it is described after
Electrical equipment control port is connect with the RDM main control chip of the relay, the both ends of the communication module respectively with RDM bus and
The connection of RDM main control chip；
The control relay circuit is additionally provided with two normally opened contacts, and the biasing resistor R44 is described normally opened set on two
Between contact.
Further, the communication module is RS485 communication module.
Further, the communication ends of the differential signal port of the RS485 communication module and the control relay circuit
Mouth connection, so that control relay circuit is added in the telecommunication circuit of driver, completes communication work jointly.
A kind of on-line automatic addressing method of RDM driver, comprising the following steps:
Driver is started to work；
First driver receives the communication data and parsing that main controller is sent, if parsing data are that broadcast addressing refers to
It enables, then all drivers for receiving the instruction will address flag bit aFlag set in system, while set relay to
Normally open, All Drives enter addressing operating mode at this time；
After first driver is connected to addressed data, the judgement of flag bit state is carried out, if aFlag=1 and relay are normally opened
State, then first driver saves present instruction as the DMX512 initial address of its distribution；
Addressing flag bit aFlag is reset, relay recovery normally off, while return address is write and completes message to master
Controller, second driver access RDM bus；
Second driver repeats the process of first driver, until the end-of-encode of n-th driver；
Terminate.
Further, described to reset addressing flag bit aFlag, relay recovery normally off, while return address is compiled
Message is write complete to master controller, second driver accesses RDM bus；Further include:
When main controller does not receive replying message for driver in certain time after addressed data is sent, then it represents that online certainly
Dynamic addressing is completed, and main controller will send one and exit addressing broadcasting instructions, and All Drives exit addressing operating mode.
Further, the N is positive integer.
The aFlag is addressing flag bit,
AFlag=0 when initialization, after controller sends broadcast addressing order, driver enters address mode, drives at this time
Dynamic device sets 1 for aFlag；
Driver is in address mode if aFlag=1, and driver can be addressed if receiving addressed data；If
AFlag=0 item is normal mode of operation, and driver can not be addressed.
The DMX512 is the transmission form for dimming data.
A kind of RDM driver RDM bus short circuit localization method, comprising the following steps:
Driver is started to work；
When driver does not receive communication data within given time, RDM bus short circuit positioning function is opened,
Relay in driver is set as normally open, and communication check mark is tFlag set；
First driver is connect with the master controller by RDM bus, and other drivers are detached from RDM bus,
Master controller initiates communication, if the first driver can communicate；Then it sets normally off for relay automatically, this
When the second driver access RDM bus；
The communication check delay time of the first driver is opened, delay time judges whether the first driver leads to after again
Letter is normal, if the first driver can not receive communication data, sets normally open, the second driver for relay automatically
It is detached from RDM bus；If the first driver restores communication, illustrate the communication input line short circuit of the second driver；
If delay time remains normal to the communication of rear first driver, the first driver and the second driver it
Between communication line fault-free, at this time the first driver communication check flag bit tFlag reset；
Second driver repeats the process of the first driver, until detecting failed communication line；
Terminate.
Further, if the delay time remains normal to the communication of rear first driver, the first driver
Communication line fault-free between the second driver, the communication check flag bit tFlag of the first driver is reset at this time；
Further include: the first driver communication check flag bit tFlag reset after, in RDM bus short circuit position fixing process its
Relay keeps normally off.
Through the above technical solutions, the beneficial effects of the present invention are:
The present invention increases control relay circuit in RDM driver hardware circuit, using the working principle of relay as base
Plinth changes the connection status between driver and RDM bus, is in driver under different working modes, to realize online certainly
Dynamic addressing and RDM bus short circuit positioning function.
The present invention without changing master circuit, between driver without increase additional wires can be realized it is on-line automatic
Addressing and the positioning of RDM bus short circuit, bring great convenience to the installation and maintenance of system.
On-line automatic addressing method of the invention is a kind of dynamic automatic addressing method, ensure that addressing reliability and
High efficiency.
RDM bus short circuit localization method of the invention is also a kind of dynamic autonomous detection method, without by any outer
Portion's detection device can find failed communication line, while after the completion of malfunctioning node detection, automatically will be after malfunctioning node
Driver is disconnected with RDM bus, it is ensured that the equipment before malfunctioning node can work normally, and ensure that the reliability of system
And stability.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structure of RDM driver proposed by the present invention on-line automatic addressing and RDM bus short circuit positioning device
Schematic diagram；
Fig. 2 is the connection schematic diagram of RDM driver proposed by the present invention；
Fig. 3 is the circuit diagram of relay control module proposed by the present invention；
Fig. 4 is the circuit diagram of RS485 communication module proposed by the present invention；
Fig. 5 is a kind of flow chart of the on-line automatic addressing method of RDM driver proposed by the present invention；
Fig. 6 is a kind of flow chart of RDM driver RDM bus short circuit localization method proposed by the present invention.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Referring to shown in attached drawing 1, a kind of RDM driver proposed by the present invention is on-line automatic to be addressed and the positioning of RDM bus short circuit
Device,
Including master controller, RDM bus and multiple RDM drivers, multiple RDM drivers are connect with RDM bus,
Multiple RDM drivers are articulated in the RDM bus as controlled device；
The input terminal of the RDM bus is connect with the master controller；
Between multiple RDM drivers according to order of connection volume be followed successively by the first RDM driver, the 2nd RDM driver,
3rd RDM driver ... N driver, the N are positive integer；
Multiple RDM drivers include RDM main control chip, control relay circuit and communication module, the relay
Control circuit is equipped with relay dynamic contact DAI/DBI, normally-closed contact DAO/DBO, biasing resistor R44 and relay control terminal
Mouthful, the relay dynamic contact DAI/DBI and the normally-closed contact DAO/DBO connect with the RRDM bus, it is described after
Electrical equipment control port is connect with the RDM main control chip of the relay, the both ends of the communication module respectively with RDM bus and
The connection of RDM main control chip；
The control relay circuit is additionally provided with two normally opened contacts, and the biasing resistor R44 is described normally opened set on two
Between contact.
Further, the communication module is RS485 communication module.
Further, the communication ends of the differential signal port of the RS485 communication module and the control relay circuit
Mouth connection, so that control relay circuit is added in the telecommunication circuit of driver, completes communication work jointly.
Referring to attached drawing 2 and attached drawing 3, the present invention is by increasing control relay circuit in driver hardware circuit, the electricity
Lu Yousi group external-connected port, respectively relay dynamic contact DAI/DBI, normally-closed contact DAO/DBO, the both ends biasing resistor R4 connect
The normally opened contact and relay status control port connect.Wherein dynamic contact DAI/DBI is connected with RDM bus input end；Often
Closed contact DAO/DBO is connected with the output end of communication module；The connection of the micro controller of relay and driver.Referring in attached drawing 3, scheme
In 4,5 two o'clocks be normally opened contact, biasing resistor R44 be arranged between normally opened contact.It is described
According to the working principle of relay, when the port JK of control relay circuit is low level, relay K1 is normal
Closed state (i.e. port DAI/DBI is connect with DAO/DBO), the driver is articulated in RDMRDM bus at this time；When the port JK
Relay K1 is in normally open (i.e. port DAI/DBI is connect with normally opened contact), the at this time driving when being set as high level
Device is detached from RDM bus.The driver controls the closed state of relay by the way that the height of JK port level is arranged, to produce
Raw two kinds of operating modes: addressing operating mode and normal mode of operation.
Referring to attached drawing 4, differential signal port and the control relay circuit described in attached drawing 3 of the RS485 communication module
Control relay circuit, is added in the telecommunication circuit of driver by communication port connection by this way, common to complete communication
Work.
Referring to attached drawing 5, a kind of on-line automatic addressing method of RDM driver proposed by the present invention, comprising the following steps:
Driver is started to work；
First driver receives the communication data and parsing that main controller is sent, if parsing data are that broadcast addressing refers to
It enables, then all drivers for receiving the instruction will address flag bit aFlag set in system, while set relay to
Normally open, All Drives enter addressing operating mode at this time；
After first driver is connected to addressed data, the judgement of flag bit state is carried out, if aFlag=1 and relay are normally opened
State, then first driver saves present instruction as the DMX512 initial address of its distribution；
Addressing flag bit aFlag is reset, relay recovery normally off, while return address is write and completes message to master
Controller, second driver access RDM bus；
Second driver repeats the process of first driver, until the end-of-encode of n-th driver；
Terminate.
Further, described to reset addressing flag bit aFlag, relay recovery normally off, while return address is compiled
Message is write complete to master controller, second driver accesses RDM bus；Further include:
When main controller does not receive replying message for driver in certain time after addressed data is sent, then it represents that online certainly
Dynamic addressing is completed, and main controller will send one and exit addressing broadcasting instructions, and All Drives exit addressing operating mode.
Further, the N is positive integer.
Further, the aFlag is addressing flag bit,
AFlag=0 when initialization, after controller sends broadcast addressing order, driver enters address mode, drives at this time
Dynamic device sets 1 for aFlag；
Driver is in address mode if aFlag=1, and driver can be addressed if receiving addressed data；If
AFlag=0 item is normal mode of operation, and driver can not be addressed.
Further, the DMX512 is the transmission form for dimming data.It can receive two class data in RDM driver,
First is that RDM control command, second is that DMX512 dims data.Here once may be used due to controller by sending DMX512 light modulation data
Most 512 channel light modulation data are sent, and current drive need to only receive 3 or 4 channel datas therein for dimming, then
That several frame data is specifically received, just adds port number to determine by DMX512 initial address, such as: current drive initial address is
1, port number 3, then driver receives 1,2,3 channel datas of DMX512 light modulation data.
When completion is built for the first time in RDM control scene of the invention, the driver being articulated in RDMRDM bus is not carried out
DMX512 initial address is write, and main controller needs to write driver progress DMX512 initial address before initiating communication.
Referring to attached drawing 6, a kind of RDM driver RDM bus short circuit localization method proposed by the present invention, comprising the following steps:
Driver is started to work；
When driver does not receive communication data within given time, RDM bus short circuit positioning function is opened；
Relay in driver is set as normally open, and communication check mark is tFlag set；
First driver is connect with the master controller by RDM bus, and other drivers are detached from RDM bus,
Master controller initiates communication, if the first driver can communicate；Then it sets normally off for relay automatically, this
When the second driver access RDM bus；
The communication check delay time of the first driver is opened, delay time judges whether the first driver leads to after again
Letter is normal, if the first driver can not receive communication data, sets normally open, the second driver for relay automatically
It is detached from RDM bus；If the first driver restores communication, illustrate the communication input line short circuit of the second driver；
If delay time remains normal to the communication of rear first driver, the first driver and the second driver it
Between communication line fault-free, at this time the first driver communication check flag bit tFlag reset；
Second driver repeats the process of the first driver, until detecting failed communication line；
Terminate.
Further, if the delay time remains normal to the communication of rear first driver, the first driver
Communication line fault-free between the second driver, the communication check flag bit tFlag of the first driver is reset at this time；
Further include: the first driver communication check flag bit tFlag reset after, in RDM bus short circuit position fixing process its
Relay keeps normally off.
When using the present invention, all communication process are initiated by main controller in RDM system, and driver is receiving control
Operation is executed after system instruction or replys response message, it is total by the achievable on-line automatic addressing of the communication of the system and RDM
Line short circuit positioning function.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. a kind of on-line automatic addressing of RDM driver and RDM bus short circuit positioning device, it is characterised in that: including master controller,
RDM bus and multiple RDM drivers, multiple RDM drivers are connect with RDM bus, multiple RDM driver conducts
Controlled device is articulated in the RDM bus；
The input terminal of the RDM bus is connect with the master controller；
The first RDM driver, the 2nd RDM driver, third are followed successively by according to order of connection volume between multiple RDM drivers
RDM driver ... N driver, the N are positive integer；
Multiple RDM drivers include RDM main control chip, control relay circuit and communication module, the relay control
Circuit is equipped with relay dynamic contact DAI/DBI, normally-closed contact DAO/DBO, biasing resistor R44 and relay control port,
The relay dynamic contact DAI/DBI and the normally-closed contact DAO/DBO are connect with the RDM bus, the relay
Control port is connect with the RDM main control chip of the relay, the both ends of the communication module respectively with RDM bus and RDM master
Control chip connection；
The driver controls the closed state of relay by the way that the height of JK port level is arranged, to generate two kinds of work
Mode: addressing operating mode and normal mode of operation；
Driver is started to work, and first driver receives the communication data and parsing that main controller is sent, if parsing data are
Broadcast addressing instruction, then all drivers for receiving the instruction will address flag bit aFlag set in system, while will be after
Electric appliance is set as normally open, and All Drives enter addressing operating mode at this time；
After first driver is connected to addressed data, the judgement of flag bit state is carried out, if aFlag=1 and relay are normally opened shape
State, then first driver saves present instruction as the DMX512 initial address of its distribution；
Addressing flag bit aFlag is reset, relay recovery normally off, while return address is write and completes message to main control
Device, second driver access RDM bus；
Second driver repeats the process of first driver, until the end-of-encode of n-th driver；
The control relay circuit is additionally provided with two normally opened contacts, and the biasing resistor R44 is set to two normally opened contacts
Between.
2. the on-line automatic addressing of a kind of RDM driver according to claim 1 and RDM bus short circuit positioning device, special
Sign is: the communication module is RS485 communication module.
3. the on-line automatic addressing of a kind of RDM driver according to claim 2 and RDM bus short circuit positioning device, special
Sign is: the differential signal port of the RS485 communication module is connect with the communication port of the control relay circuit, so that
Control relay circuit is added in the telecommunication circuit of driver, completes communication work jointly.
4. a kind of on-line automatic addressing method of RDM driver, it is characterised in that: the following steps are included:
Driver is started to work；
First driver receives the communication data and parsing that main controller is sent, if parsing data are broadcast addressing instruction,
All drivers for receiving the instruction will address flag bit aFlag set in system, while set normally opened for relay
State, All Drives enter addressing operating mode at this time；
After first driver is connected to addressed data, the judgement of flag bit state is carried out, if aFlag=1 and relay are normally opened shape
State, then first driver saves present instruction as the DMX512 initial address of its distribution；
Addressing flag bit aFlag is reset, relay recovery normally off, while return address is write and completes message to main control
Device, second driver access RDM bus；
Second driver repeats the process of first driver, until the end-of-encode of n-th driver；
Terminate.
5. a kind of on-line automatic addressing method of RDM driver according to claim 4, it is characterised in that: described to address
Flag bit aFlag is reset, relay recovery normally off, while return address is write and completes message to master controller, and second
Driver accesses RDM bus；Further include:
When main controller does not receive replying message for driver in certain time after addressed data is sent, then it represents that on-line automatic volume
Location is completed, and main controller will send one and exit addressing broadcasting instructions, and All Drives exit addressing operating mode.
6. a kind of on-line automatic addressing method of RDM driver according to claim 4, it is characterised in that: the N is positive whole
Number.
7. a kind of on-line automatic addressing method of RDM driver according to claim 4, it is characterised in that: the aFlag is
Flag bit is addressed,
AFlag=0 when initialization, after controller sends broadcast addressing order, driver enters address mode, at this time driver
1 is set by aFlag；
Driver is in address mode if aFlag=1, and driver can be addressed if receiving addressed data；If
AFlag=0 item is normal mode of operation, and driver can not be addressed.
8. a kind of on-line automatic addressing method of RDM driver according to claim 4, it is characterised in that: the DMX512
For the transmission form for dimming data.
9. a kind of RDM driver RDM bus short circuit localization method, it is characterised in that: the following steps are included:
Driver is started to work；
When driver does not receive communication data within given time, RDM bus short circuit positioning function is opened,
Relay in driver is set as normally open, and communication check mark is tFlag set；
First driver is connect with master controller by RDM bus, and other drivers are detached from RDM bus,
Master controller initiates communication, if the first driver can communicate；Then it sets normally off for relay automatically, and at this time
Two drivers access RDM bus；
The communication check delay time of the first driver is opened, delay time judges whether the first driver communicates just after again
Often, if the first driver can not receive communication data, normally open is set by relay automatically, the second driver is detached from
RDM bus；If the first driver restores communication, illustrate the communication input line short circuit of the second driver；
If delay time remains normal to the communication of rear first driver, between the first driver and the second driver
Communication line fault-free, the communication check flag bit tFlag of the first driver is reset at this time；
Second driver repeats the process of the first driver, until detecting failed communication line
Terminate.
10. a kind of RDM driver RDM bus short circuit localization method according to claim 9, it is characterised in that: it is described such as
Fruit delay time remains normal to the communication of rear first driver, then the communication line between the first driver and the second driver
Fault-free, the communication check flag bit tFlag of the first driver is reset at this time；
Further include: after the first driver communication check flag bit tFlag is reset, its relay in RDM bus short circuit position fixing process
Device keeps normally off.
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| CN107422704A (en) * | 2017-06-23 | 2017-12-01 | 陕西科技大学 | A kind of networking landscape lighting control system based on RDM and Art net protocols |
| CN109041349B (en) * | 2018-09-03 | 2020-06-09 | 深圳市汇德科技有限公司 | Automatic address compiling device and system based on LED decoding circuit |
| CN110839091A (en) * | 2019-11-18 | 2020-02-25 | 派诺西智能科技(苏州)有限公司 | Bus type communication control system and online addressing method |
| CN111901951B (en) * | 2020-07-28 | 2023-03-24 | 众盒智能科技(上海)有限公司 | RDM lamp automatic address writing system and method |
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| CN1670717A (en) * | 2004-03-18 | 2005-09-21 | 联想(北京)有限公司 | Apparatus and method for allocating hardware address in embedded system |
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| CN102354181A (en) * | 2011-08-03 | 2012-02-15 | 韦自力 | Control system based on field bus and method for addressing addresses for bus equipment |
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