CN108319177A - Frequency converter and frequency converter inner parameter configuration method - Google Patents
Frequency converter and frequency converter inner parameter configuration method Download PDFInfo
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- CN108319177A CN108319177A CN201710032798.1A CN201710032798A CN108319177A CN 108319177 A CN108319177 A CN 108319177A CN 201710032798 A CN201710032798 A CN 201710032798A CN 108319177 A CN108319177 A CN 108319177A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24215—Scada supervisory control and data acquisition
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Abstract
A kind of frequency converter inner parameter configuration method, external controlling equipment read the parameter attribute of each inner parameter of frequency converter by communication protocol dynamic, and the parameter attribute of each inner parameter includes parameter number, parameter name and parameter value；The parameter attribute further includes display properties, if the display properties of the inner parameter is display, which is shown to user by external controlling equipment, if the display properties of the inner parameter is hiding, external controlling equipment does not show the parameter.Frequency converter inner parameter configuration method of the present invention, the numerical value that external controlling equipment passes through communication protocol dynamic access interiors of products parameter, and parameter attribute, and the parameter attribute based on acquisition configures inner parameter, so that external controlling equipment can be adapted for the frequency converter of different model and specification, after method using the present invention, it will realize that operation panel is completely general, the development cycle is shortened, development efficiency is improved.
Description
Technical field
The present invention relates to Low Voltage Electrical Apparatus, more particularly to a kind of frequency converter and frequency converter inner parameter configuration method.
Background technology
Frequency converter belongs to a kind of more complex product, needs the place for adapting to various complexity, and meet different technique and want
It asks, therefore number of parameters contained by inside is (or even thousands of) usually up to a hundred.And more common method is in CPU master board (frequency conversions
Inside device) in the setting number of parameters of complete set, parameter attribute, parameter be grouped situation, external controlling equipment (such as operating surface
Plate, host computer monitoring software) it is also required to built-in a set of parameter consistent with CPU master boards.If interiors of products parameter is
Change, then must change operation panel and CPU master boards, to ensure the consistency of parameter simultaneously.If there is specific customization
Product or special machine product for some industry, then operation panel must also follow change, thus considerably increase manpower
Development cost and product up-gradation maintenance cost.Therefore, existing frequency converter is primarily present following defect and deficiency：(1) it operates
Panel can not accomplish completely compatible, especially specific customization type and special machine, it is necessary to use special panel.It (2) can not be automatic
Obtain and identify number of parameters, parameter the grouping situation that interiors of products included, when product in upgrade maintenance process such as to parameter
When being adjusted, it is necessary to while the parameter definition of CPU master boards and control panel is changed, it just can guarantee consistency.
Most of existing parameter attribute is merely defined in CPU master boards, other controlling equipments can not get parms category
The concrete condition of property, will be unable to automatic identification and corresponds to the information such as unit, storage address, read-write properties, the value range of parameter, and
It is that a identical parameter attribute list must be redefined in controlling equipment.Very big workload is not only increased, and product is simultaneous
Capacitive is poor.If parameter attribute is modified, operation equipment must carry out synchronous vacations, otherwise be easy for leading to parameter attribute
Dislocation.
Invention content
It is an object of the invention to overcome the deficiencies of existing technologies, the present invention relates to a kind of acquisition interiors of products institute containing parameters
The method of information and automatic identification, can be used for the products such as frequency converter, constant-current source, inverter, by being defined inside frequency converter
A set of communication protocol, controlling equipment (host computer monitoring software, operation panel etc.) obtain ginseng inside frequency converter by communication protocol
Number information, it is completely general to realize operation panel complete series product, the development cycle is shortened, development efficiency is improved.This
Invention further relates to the definition method and access mode of the parameter attribute of interiors of products parameter, can be used for frequency converter, constant-current source, inverse
Become the products such as device, external controlling equipment obtains the parameter attribute of each parameter inside frequency converter by communication protocol.
To achieve the above object, present invention employs following technical solutions：
A kind of frequency converter inner parameter configuration method, external controlling equipment are each interior by communication protocol dynamic reading frequency converter
The parameter attribute of the parameter attribute of portion's parameter, each inner parameter includes parameter number, parameter name and parameter value；The ginseng
Number attribute further includes display properties, if the display properties of the inner parameter is display, external controlling equipment joins the inside
Number is shown to user, if the display properties of the inner parameter is hiding, external controlling equipment does not show the parameter.
Further, the parameter attribute further includes modification attribute, if the modification attribute of the inner parameter is read-only,
External controlling equipment does not allow user to modify the inner parameter, if the modification attribute is that can change, user Ke Tong
It crosses external controlling equipment to modify to the inner parameter, and modified parameter value is returned to by frequency conversion by communication protocol
Device.
Further, the parameter attribute further includes factory-said value, if the modification attribute is that can change, external manipulation is set
Standby provide restores factory-said value function, and the parameter value of the inner parameter can be revised as out by user by operating external controlling equipment
Factory's value, and modified parameter value is returned to by frequency converter by communication protocol.
Further, the parameter attribute further includes value range, if the modification attribute is that can change, external manipulation
Equipment only allows user that parameter value is revised as to the numerical value in value range.
Further, the parameter attribute further includes unit.
Further, it is number or the parameter class of option that the parameter attribute, which further includes for expression parameter value,
Type.
Further, the parameter attribute further includes amplification factor；Amplification factor takes for defining current acquired parameter
Value is exaggerated how many times compared with practical value, and external controlling equipment obtains after parameter current value further according to amplification factor just
Can get parms practical value.
Further, the parameter attribute further includes display type；If the display properties of the inner parameter is display,
External controlling equipment is shown parameter value by the decimal system or hexadecimal or binary system according to display type.
A kind of frequency converter using above-mentioned frequency converter inner parameter configuration method, the external controlling equipment is operating surface
The CPU master boards of plate, the operation panel and frequency converter of frequency converter connect, and operation panel includes operation and control module, display mould
Block, setting button.
A kind of frequency converter using above-mentioned frequency converter inner parameter configuration method, the external controlling equipment is upper
The CPU master boards of machine, host computer and frequency converter connect, and the host computer includes CPU, memory, display screen and input unit,
Host computer is communicated by network with the CPU master boards of product.
Frequency converter inner parameter configuration method of the present invention, external controlling equipment pass through communication protocol dynamic access interiors of products
The numerical value and parameter attribute of parameter, and the parameter attribute based on acquisition configures inner parameter so that outside manipulation is set
The standby frequency converter that can be adapted for different model and specification after the method using patent of the present invention, will realize that operation panel is complete
It is general, the development cycle is shortened, development efficiency is improved.
Specific implementation mode
The specific implementation mode of the frequency converter inner parameter configuration method of the detailed description below present invention.The frequency conversion of the present invention
Device inner parameter configuration method is not limited to the following description.
The method that the present invention obtains interiors of products parameter information automatically, external controlling equipment are connect by network with product dynamic
State obtains the inner parameter information of product, and inner parameter information includes parameter group group number, the group number value of each parameter group, Mei Gecan
The number of parameters of array；Parameter group number address corresponding with parameter group group number is defined, join corresponding to the group number value of parameter group is defined
Array number is worth initial address, defines number initial address in parameter group corresponding with the number of parameters of parameter group；Outside manipulation is set
It is standby to be included the following steps by communication protocol reading parameter information：
A reads parameter group number address and gets parms the group number MAX of group；
B is successively read parameter group number value initial address to the data between parameter group number value initial address+MAX-1, obtains
The group number value of every group of parameter；
C is successively read in parameter group the data between number initial address+MAX-1 in number initial address to parameter group,
Obtain the number of every group of parameter.
The external controlling equipment is that either host computer operation panel or host computer pass through network and product to operation panel
CPU master boards communication.
The method that the present invention obtains interiors of products parameter information automatically is in the agreement based on standard compliant communication protocol
In application layer, the information such as number of parameters, parameter grouping situation, product category for being included by interiors of products carry out corresponding data
Definition, external controlling equipment (such as operation panel, host computer monitoring software) only need built-in corresponding data analysis protocol
Automatically CPU master board corresponding informations are obtained and is parsed, number of parameters contained by interiors of products, grouping feelings are obtained to reach automatic
The purpose of condition, automatic identification product category.It after method using patent of the present invention, will realize that operation panel is completely general, shorten
Development cycle, improve development efficiency.The method that the present invention obtains interiors of products parameter information automatically, can be used for frequency conversion
The products such as device, constant-current source, inverter, external controlling equipment is connected by the CPU master boards of communication module and frequency converter, external
Controlling equipment can be the operation panel of frequency converter, the monitoring software of PC host computers.External controlling equipment is with the operation of frequency converter
For panel, the CPU master boards of the operation panel of frequency converter and frequency converter connect, operation panel include operation and control module,
Display module, setting button.
The corresponding group number value of group number for defining interiors of products parameter in CPU master boards using array is applying a number
Group defines the quantitative value for the parameter that each group is included.The agreement for the information that gets parms defined in CPU board is as follows：Using MODBUS
The communication function code " 0x03 (obtaining register address) " of agreement, obtains the parameter total number that group number value and each group are included；Point
The mailing address value of the mailing address value and the included number of parameters of each group of group number, i.e. parameter group number value starting point Ding Yi not obtained
Number initial address in location and parameter group.In external controlling equipment (such as operation panel, host computer monitoring software), need to only it pass through
" 0x03 (obtains register address) to the communication function code of MODBUS agreements, and according to the parameter group number address of agreement defined, i.e.,
The group number for the group that can get parms only need to pass through the communication function code " 0x03 of MODBUS agreements if necessary to obtain each group group number
(obtaining register address) ", and initial address is worth according to the array number of agreement defined and obtains the corresponding group number value of each group, with same
Sample loading mode obtains the number of parameters that each group is included from defined mailing address.External controlling equipment, according to above-mentioned acquired
Information group number value and each group institute containing parameter total number are parsed and are recombinated, re-form parameter grouping and detailed row
Row mode, to achieve the purpose that number of parameters contained by automatic acquisition interiors of products, grouping situation.
Similarly, acquisition is similar therewith with the mode of automatic identification product category, first passes through internal agreement and defines product category
Information, " identification code (specific data) " corresponding to each product category of predefined, re-defines corresponding to the identification parameter
Mailing address can obtain simultaneously automatic identification product category by communication function code " 0x03 " function of Modbus agreements.
Detailed mailing address can be voluntarily fixed according to actual conditions corresponding to the parameter that parameter grouping situation, each group are included
Justice, the communication function code " 0x03 " used in Modbus communication protocols can also be replaced with other communication function codes, either
Communication protocol changes other agreements (such as EtherNet, CANopen, DeviceNet) into, and corresponding function equally can be achieved.
Pass through the number of array defined parameters group number value and every group of parameter.Specially：
The first step：Defined parameters group number value；
Second step：Define the parameter total number that each group is included；
Third walks：Define mailing address；
Ultimately form communication protocol as in the table below：
4th step：Get parms group number in control panel；
By the communication function code " 0x03 " of MODBUS agreements, from acquisition this product institute in parameter group number address " 0x4200 "
Including group numerical value MAX (i.e.：This product includes how many groups of parameters altogether), then obtained from parameter group number value initial address " 0x4201 "
Take first group number value, from mailing address " 0x4202 " obtain second group number value, and so on, when need obtain N group groups
Number when, from mailing address " 0x4201+N " obtain.
Similarly, straight since mailing address " 0x4300 " by communication function code " 0x03 " function code of MODBUS agreements
Until " 0x4300+MAX-1 ", the parameter total number value for being included corresponding to a whole set of products parameter group can be obtained.
The method that the present invention obtains interiors of products parameter information automatically further includes the method for obtaining product category：Definition and production
The not one-to-one product ID of category defines identification code mailing address corresponding with product ID；External controlling equipment
Parameter information is read by communication protocol to include the following steps：
A reads identification code mailing address and obtains product ID；
B is decoded acquisition product category to product ID.
Specifically, product identification information of identification code is first defined, such as：" 300 " are " NVF300 " Series Frequency Converter；“3003”
For " EX9VF3 " Series Frequency Converter；" 6006 " are the information of identification code such as " EX9VF6 " Series Frequency Converter.Re-define information of identification code
Corresponding argument address, we are defined in producer's parameter group, are defined, while defining its special mailing address.Outside
Portion's controlling equipment need to only be accessed and obtained to corresponding mailing address by communication function code according to above-mentioned definition information
Corresponding data are taken, then after being decoded, it just being capable of automatic identification product category.
The method that the present invention obtains interiors of products parameter information automatically further includes that external controlling equipment is read by communication protocol
The method for taking the parameter attribute of each parameter of frequency converter, in the way of structure, association together by parameter attribute definition, and
The communication mode for the attribute that gets parms is defined, to which controlling equipment not only can access and change corresponding parameter value, also
Simultaneously automatic analytic parameter attribute (containing parameter title, parameter number, value range, unit, amplification factor, storage can be obtained
Location, read-write properties, display/hide etc.)；The versatility of product will be greatly improved.So-called acquisition inner parameter
Specifying information, including parameter number, parameter name, parameter value, unit, amplification factor, data type, modification attribute, display
Type (decimal system, hexadecimal, binary system), value range (maximum value, minimum value), factory-said value, parameter type (pure digi-tal,
Single option, can primary multiple options, on off state), the information such as amplification factor.These contents pass through structure, joint
Body, and the mode for taking position to define is defined it, the parameter attribute information of each parameter includes 4-5 16 bit data values
(data amount check can be adjusted according to actual attribute), and retain certain extension bits, improve compatibility.Parameter attribute is each ginseng
Number has oneself independent parameter attribute, and acquisition modes are obtained by the application layer of communication protocol, if assisted with MODBUS
If view, for example " 0x04 (get parms attribute) " is used, corresponding register address is parameter number order, can once be obtained
One parameter attribute, can also multiple attributes disposably obtain.If the other communication protocols of use (such as：CANopen、
DeviceNet, Profibus-DP, EtherNet) it can also analogize in a comparable manner.The current value of general parameter is also
It can individually obtain or multiple while obtaining, it is only multiple while when obtain, it is limited by MODBUS agreements, it is necessary to
It is adjacent parameter to obtain simultaneously.
Frequency converter inner parameter configuration method of the present invention, external controlling equipment are each by communication protocol dynamic reading frequency converter
The parameter attribute of the parameter attribute of inner parameter, each inner parameter includes parameter number, parameter name and parameter value；It is described
Parameter attribute further includes display properties, if the display properties of the inner parameter is display, external controlling equipment will be inside this
Parameter is shown to user, and the information of display includes parameter name and parameter value, if the display properties of the inner parameter is hidden
It hides, then external controlling equipment does not show the parameter.Frequency converter inner parameter configuration method of the present invention, external controlling equipment pass through logical
Believe that protocol dynamic obtains the numerical value and parameter attribute of interiors of products parameter, and based on the parameter attribute of acquisition to inner parameter
It is configured so that external controlling equipment can be adapted for the frequency converter of different model and specification, using the side of patent of the present invention
After method, it will realize that operation panel is completely general, shorten the development cycle, improve development efficiency.
Present invention parameter attribute above-mentioned further includes modification attribute, factory-said value, value range, unit, parameter type, amplification
Multiple, display type.If the modification attribute of the inner parameter is read-only, external controlling equipment does not allow user to the inside
Parameter is modified, if the modification attribute is that can change, user can carry out the inner parameter by external controlling equipment
Modification, and modified parameter value is returned to by frequency converter by communication protocol.The parameter attribute further includes factory-said value, such as
The fruit modification attribute is that can change, then external controlling equipment, which provides, restores factory-said value function, and user can be by operating external manipulation
The parameter value of the inner parameter is revised as factory-said value by equipment, and is returned to modified parameter value by communication protocol and become
Frequency device.The parameter attribute further includes value range, if the modification attribute is that can change, external controlling equipment only allows
Parameter value is revised as the numerical value in value range by user.The parameter attribute further includes unit, and external controlling equipment will
The parameter value and unit of the inner parameter are shown to user together.The parameter attribute further includes being used for expression parameter value
For number or the parameter type of option.If parameter type is numerical value, user can be repaiied by external controlling equipment
Change, if parameter type is option, user can only select in multiple options that external controlling equipment provides.Described
Parameter attribute further includes amplification factor, and amplification factor is amplified for defining current acquired parameter value compared with practical value
How many times, external controlling equipment is obtained and can be got parms practical value further according to amplification factor after parameter current value.Institute
The parameter attribute stated further includes display type；If the display properties of the inner parameter is display, external controlling equipment according to
Display type is shown parameter value by the decimal system or hexadecimal or binary system.It is selected in so-called " multiple options ",
For example some parameter value range is 0-3, respectively represents 4 kinds of meanings, can only select one of which every time, then such
Parameter value just belongs to alternative parameter, and outside manipulation should be just that the selection of 0-3 kinds is a kind of.So-called " amplification factor " is to be used for
The current acquired parameter value of definition is exaggerated how many times compared with practical value, because parameter value can be integer, one
Position decimal, two-decimal, multidigit decimal etc..It defines " amplification factor " just not having to re-define floating number afterwards, can also allow
Parameter value uses uniform data digit, for example is used uniformly the defined parameters values such as 8 data, 16 data, 32 data
Type (also needs to define data precision, i.e., without defining float：Decimal point precision), external controlling equipment obtains
Taking can get parms practical value further according to amplification factor after parameter current value, for example the current of one of parameter takes
Value is 5000, and amplification factor is 2, then the practical value of parameter current is " 50.00 ".
The frequency converter inner parameter configuration method of the present invention, can implement in the following manner：Frequency converter defines a packet
Include the frequency changer body of frequency converter inner parameter attribute；According to the number of frequency changer body defined parameters attribute in frequency converter
Group, external controlling equipment definition one is corresponding with frequency changer body to operate device structure body；External controlling equipment passes through logical
After believing that agreement obtains the parameter attribute inside frequency converter, by operating the parameter category inside device structure body automatic identification frequency converter
Property.
Specifically, pass through the parameter attributes such as structure, association, bit manipulation, array relevant information (containing parameter title, ginseng
Number number, value range, unit, amplification factor, storage address, read-write properties, display/hide) it is defined in a structure.
The parameter attribute of frequency converter inner parameter is put in order according to above-mentioned defined structure according to parameter, grouping is fixed one by one
Adopted parameter attribute situation, while the communication mode of a set of attribute that gets parms is formulated, external controlling equipment (upper computer software, behaviour
Make panel etc.) it only needs to get parms attribute according to above-mentioned defined communication mode, and define the mutually same structure in inside
(above-mentioned parameter attribute definition structure) can realize the parameter attribute feelings for obtaining all parameters inside simultaneously automatic identification frequency converter
Condition.
Specifically there are the following steps：
The first step：Defined parameters attribute structure body；(relevant information required for parameter attribute, practical operation are defined
Cheng Zhong can be accordingly increased or be reduced according to actual demand)
Second step：It is (interior such as by group definition can to arrange parameter attribute according to certain rule for defined parameters attribute one by one
Portion is according to parameter sequential arrangement), define the mode defined parameters of two-dimensional array；
Third walks：Define communication protocol (i.e. outside controlling equipment how to get parms attribute)；
Therefore, only a set of identifiable agreement need to be defined, external controlling equipment can easily get parms attribute.Such as
We identify address between the two according to the serial number definition of parameter.External controlling equipment only needs logical by corresponding communication protocol
Know that CPU master boards need to obtain relevant parameter attribute, then CPU master boards are from " second step " has sorted parameter attribute list
Respective attributes are obtained, and submit to controlling equipment.
4th step：Controlling equipment identifies and parses corresponding parameter attribute.
External controlling equipment (such as operation panel, host computer monitoring software) only needs to define one one according to " first step "
The same parameter attribute structure of mould is parsed as soon as getting a parameter attribute every time.This step, it should be noted that
Adjust the big little endian mode of chip.
Pass through above four steps, so that it may which, to define parameter attribute, thus external controlling equipment can also be obtained freely
Simultaneously automatic analytic parameter attribute situation is taken, and has some change such as parameter attribute and (increases or decreases parameter attribute content or parameter
When number or parameter ordering difference), only content included in product end adjustment " second step ", meets different productions
Product, and external controlling equipment can be accomplished completely compatible, external controlling equipment is without adjustment.The external controlling equipment is operation
Either host computer operation panel or host computer are communicated by network with the CPU master boards of product panel；The operation of frequency converter
The CPU master boards of panel and frequency converter connect, and operation panel includes operation and control module, display module, setting button；It is upper
The CPU master boards of machine and frequency converter connect, and the host computer includes CPU, memory, display screen and input unit, host computer
It is communicated with the CPU master boards of product by network.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
The specific implementation of the present invention is confined to these explanations.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the present invention's
Protection domain.
Claims (10)
1. a kind of frequency converter inner parameter configuration method, it is characterised in that：
External controlling equipment reads the parameter attribute of each inner parameter of frequency converter by communication protocol dynamic, each inner parameter
Parameter attribute includes parameter number, parameter name and parameter value；
The parameter attribute further includes display properties, if the display properties of the inner parameter is display, external controlling equipment
The inner parameter is shown to user, if the display properties of the inner parameter is hiding, external controlling equipment does not show this
Parameter.
2. frequency converter inner parameter configuration method according to claim 1, it is characterised in that：The parameter attribute further includes
Attribute is changed, if the modification attribute of the inner parameter is read-only, external controlling equipment does not allow user to the inner parameter
It modifies, if the modification attribute is that can change, user can modify to the inner parameter by external controlling equipment,
And modified parameter value is returned to by frequency converter by communication protocol.
3. frequency converter inner parameter configuration method according to claim 2, it is characterised in that：The parameter attribute further includes
Factory-said value, if the modification attribute is that can change, external controlling equipment, which provides, restores factory-said value function, and user can pass through operation
The parameter value of the inner parameter is revised as factory-said value by external controlling equipment, and is taken modified parameter by communication protocol
Value returns to frequency converter.
4. frequency converter inner parameter configuration method according to claim 2, it is characterised in that：The parameter attribute further includes
Value range, if the modification attribute is that can change, external controlling equipment only allows user that parameter value is revised as value
Numerical value in range.
5. frequency converter inner parameter configuration method according to claim 2, it is characterised in that：The parameter attribute further includes
Unit.
6. frequency converter inner parameter configuration method according to claim 1 or claim 2, it is characterised in that：The parameter attribute is also
Include for expression parameter value be number or option parameter type.
7. frequency converter inner parameter configuration method according to claim 1, it is characterised in that：The parameter attribute further includes
Amplification factor；Amplification factor is exaggerated how many times for defining current acquired parameter value compared with practical value, outside
Controlling equipment can get parms practical value after obtaining parameter current value further according to amplification factor.
8. frequency converter inner parameter configuration method according to claim 1, it is characterised in that：The parameter attribute further includes
Display type；If the display properties of the inner parameter is display, external controlling equipment is according to display type by parameter value
It is shown by the decimal system or hexadecimal or binary system.
9. a kind of frequency converter using any frequency converter inner parameter configuration methods of claim 1-8, the external behaviour
Control equipment is operation panel, and the CPU master boards of the operation panel and frequency converter of frequency converter connect, and operation panel includes that operation is controlled
Molding block, display module, setting button.
10. a kind of frequency converter using any frequency converter inner parameter configuration methods of claim 1-8, the external behaviour
Control equipment is host computer, and the CPU master boards of host computer and frequency converter connect, and the host computer includes CPU, memory, display
Screen and input unit, host computer are communicated by network with the CPU master boards of product.
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Cited By (3)
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| CN108900135A (en) * | 2018-08-14 | 2018-11-27 | 广东志成冠军集团有限公司 | Monitoring system based on CANopen communication |
| CN109560688A (en) * | 2018-12-03 | 2019-04-02 | 中冶南方（武汉）自动化有限公司 | Frequency converter keyboard generalization processing method |
| CN117713512A (en) * | 2024-02-05 | 2024-03-15 | 苏州新仪科学仪器有限公司 | Frequency conversion board identification and control method and device and electronic equipment |
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| CN109560688A (en) * | 2018-12-03 | 2019-04-02 | 中冶南方（武汉）自动化有限公司 | Frequency converter keyboard generalization processing method |
| CN109560688B (en) * | 2018-12-03 | 2020-01-03 | 中冶南方（武汉）自动化有限公司 | Frequency converter keyboard universal processing method |
| CN117713512A (en) * | 2024-02-05 | 2024-03-15 | 苏州新仪科学仪器有限公司 | Frequency conversion board identification and control method and device and electronic equipment |
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Application publication date: 20180724 |