WO2004114630A1 - Plc having wireless communication function - Google Patents
Plc having wireless communication function Download PDFInfo
- Publication number
- WO2004114630A1 WO2004114630A1 PCT/KR2004/000557 KR2004000557W WO2004114630A1 WO 2004114630 A1 WO2004114630 A1 WO 2004114630A1 KR 2004000557 W KR2004000557 W KR 2004000557W WO 2004114630 A1 WO2004114630 A1 WO 2004114630A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- module
- plc
- wireless communication
- communication
- bluetooth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
-
- 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
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
-
- 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
- G05B2219/25—Pc structure of the system
- G05B2219/25186—Bluetooth
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
Definitions
- the present invention relates to a PLC (Programmable Logic Controller)
- wireless communication function capable of achieving a wireless
- PLC Protein Logic Controller
- a PLC is generally designated as a master
- a peripheral device for example, a motor, a valve unit, etc.
- FIG. 1 is a view illustrating a conventional PLC.
- the PLC includes a
- module 3 that receives a signal from a sensor or a switch, an output module 4 that transfers a control signal to a motor or a valve that is a controlled object,
- a peripheral device such as a motor or a
- valve is designated as a slave, and input and output modules 3 and 4 and each
- control data is transferred through the communication line 6.
- control data is transferred to the corresponding slave (for example, slave 1 ).
- plurality of slaves are configured to communicate data through the wired
- the bluetooth uses a 2.4GHz frequency bandwidth and has a transfer
- the communication of the same is achieved based on a wireless communication protocol that is configured using a frequency hopping
- the bluetooth is
- the bluetooth has
- Controller that includes a power module, a CPU (Central Processing Unit)
- a PLC having a
- having a bluetooth module can communicate with a PLC based on a wireless
- Figure 1 is a view illustrating the construction of a conventional PLC
- Figure 2 is a view illustrating the construction of a PLC having a wireless communication function according to the present invention.
- Figure 2 is a view illustrating the construction of a PLC (Programmable
- the communication module of a PLC directly
- the present invention includes a power module 10, a battery 12, a battery 14, a battery 16, a power module 12, a power module 14, a power module 16, a power module 18, a power module 20, a power module 20, a power module 20, a power module 20, a power module 20, a power module 20, a power module 20, a power module 20, a power module 20, a power module 20, a power module 20, a power module 20, a power module 20, a power module 20, a power module 20, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power module 12, a power
- the CPU module 20 CPU module 20, and a communication module 30.
- a bluetooth module 31 capable of supporting a local area network
- the PLC controls a peripheral device such as a motor, a valve, etc. designated as a slave (a, b, c%), in the case that
- the CPU module 20 outputs a control data with respect to a corresponding to
- the communication module 30 transfers the control
- the bluetooth module 31 transfers the data to the bluetooth module of
- the slave 1 a based on a wireless communication method, and the slave 1 a
- the communication module 30 through the bluetooth module of the slave 1 a.
- the bluetooth module 31 transfers a corresponding response data to the
- the bluetooth module 31 of the communication module 30 may be formed of a plurality of bluetooth modules for thereby achieving a wireless
- each slave (a, b, c .) based on a 1 :1 match or may be
- the system may be getting
- communication module 30 can recognize a corresponding control data and can
- the bluetooth module 31 is installed in the Bluetooth module 31 .
- communication module 30 can communicate with the bluetooth module 31.
- the slaves (a, b, c, %) of the PLC having the bluetooth module can be any suitable slaves (a, b, c, %) of the PLC having the bluetooth module.
- a bluetooth module capable of
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Programmable Controllers (AREA)
Abstract
The present invention provides a PLC(Program Logic Controller) having a wireless communication function which is capable of communicating with a peripheral device of a PLC through a communication module wherein a bluetooth module is inserted. In a PLC provided with a power module, a CPU and a communication module, (1) the CPU module communicates with the communication module by inserting a bluetooth module which supports short distance wireless communication to the above communication module; (2) a slave device of the PLC provided with a bluetooth module is capable of communicating with a PLC. Thereby, costs and defects are reduced and the maintenance is convenient. And also, the present invention simplifies the components of a system and eliminates a space restriction.
Description
PLC HAVING WIRELESS COMMUNICATION FUNCTION
Technical Field
The present invention relates to a PLC (Programmable Logic Controller)
having a wireless communication function, and in particular to a PLC having a
wireless communication function capable of achieving a wireless
communication with a peripheral device of a PLC based on a communication
module by installing a bluetooth module in a communication module of a PLC.
Background Art
Generally, a PLC (Programmable Logic Controller) has been used in a
wide range including a process control range and various other industrial fields
related thereto. As the field of industry is diversified, a control range of a PLC
has been gradually extended. Therefore, a network environment is generally
configured in such a manner that a PLC is generally designated as a master,
and a peripheral device (for example, a motor, a valve unit, etc.) is designated
as a slave for thereby controlling the above elements.
Figure 1 is a view illustrating a conventional PLC. The PLC includes a
common power module 1 , a CPU (Central Processing Unit) module 2, an input
module 3 that receives a signal from a sensor or a switch, an output module 4
that transfers a control signal to a motor or a valve that is a controlled object,
and a communication module 5.
As shown therein, in the PLC, a peripheral device such as a motor or a
valve is designated as a slave, and input and output modules 3 and 4 and each
slave (a, b, c, ...) are connected using a wired communication line 6, so that a
control data is transferred through the communication line 6.
Namely, when a CPU module 2 outputs a control data concerning a
corresponding slave (for example, slave 1 ), the control data is transferred to the
slave 1 a through the communication module 5, the output module 4 and the
wired communication line 6. On the contrary, the data from the slave 1 a is
inputted into the CPU module 2 through the wired communication line 6, the
input module 3, and the communication module 5.
In the conventional art, the input and output (I/O) modules and a
plurality of slaves are configured to communicate data through the wired
communication line. Therefore, the construction and installation of the system
are so complicated. There is a limit in an installation space. A maintenance cost
is increased.
Recently, a bluetooth wireless communication has been developed for a
local area wireless communication.
The bluetooth uses a 2.4GHz frequency bandwidth and has a transfer
distance of 10-100m. The communication of the same is achieved based on a
wireless communication protocol that is configured using a frequency hopping
method for a communication even though there is an obstacle. The bluetooth is
capable of supporting a Piconet in which a communication is achieved based on
point-to-point and point-to-multi points between one master and maximum
seven slaves, and supporting a scatternet in which a communication is
achieved based on point-to-point and point-to-multi points. The bluetooth has
been adapted to various products such as a mobile phone, a PDA, a notebook
computer, a headset, a printer, a keyboard, a mouse, etc.
Disclosure of Invention
Accordingly, it is an object of the present invention to provide a PLC
having a wireless communication function that overcomes the problems
encountered in the conventional art.
It is another object of the present invention to provide a PLC having a
wireless communication function that is capable of achieving a wireless
communication with a peripheral device of a PLC using a communication
module in such a manner that a bluetooth module supporting a LAN wireless
communication is installed in the communication module of the PLC and is
capable of simplifying the construction of a system.
It is further another object of the present invention to provide a PLC
having a wireless communication function that is capable of overcoming a limit
in an installation space, achieving an easier installation and decreasing a
maintenance cost.
To achieve the above objects, in a PLC (Programmable Logic
Controller) that includes a power module, a CPU (Central Processing Unit)
module, and a communication module, there is provided a PLC having a
wireless communication function that is characterized in that a PLC slave
having a bluetooth module can communicate with a PLC based on a wireless
communication method in such a manner that a bluetooth module capable of
supporting a local area network wireless communication is installed in the
communication module, so that the CPU module communicates with the
communication module, and the communication module communicates with the
bluetooth module.
Brief Description of Drawings
The present invention will become better understood with reference to
the accompanying drawings which are given only by way of illustration and thus
are not limitative of the present invention, wherein;
Figure 1 is a view illustrating the construction of a conventional PLC; and
Figure 2 is a view illustrating the construction of a PLC having a wireless
communication function according to the present invention.
Best Mode for Carrying Out the Invention
The preferred embodiments of the present invention will be described
with reference to the accompanying drawings.
Figure 2 is a view illustrating the construction of a PLC (Programmable
Logic Controller) having a wireless communication function. In the present
invention, a CPU module and a communication module of a PLC directly
communicate with each other without a relay of an input and output module of a
conventional PLC in such a manner that a bluetooth module is installed in a
communication module of a PLC. The communication module directly
communicates with the bluetooth module installed in the communication module,
so that it is possible to achieve a wireless communication between a
communication module having a bluetooth module and each slave without
having an additional input and output module.
As shown therein, the present invention includes a power module 10, a
CPU module 20, and a communication module 30. The communication module
30 includes a bluetooth module 31 capable of supporting a local area network
(LAN). In addition, a bluetooth module is provided in each slave (a, b, c ...) that
is a peripheral device of the PLC.
In the present invention, when the PLC controls a peripheral device
such as a motor, a valve, etc. designated as a slave (a, b, c...), in the case that
the CPU module 20 outputs a control data with respect to a corresponding to
slave (for example, slave 1 ), the control data is transferred to the
communication module 30. The communication module 30 transfers the control
data from the CPU module 20 to the bluetooth module 31 of the communication
nodule 30.
The bluetooth module 31 transfers the data to the bluetooth module of
the slave 1 a based on a wireless communication method, and the slave 1 a
receives the data for thereby performing an operation based on the control data
received.
In addition, when the CPU module 20 outputs a corresponding data in
order to obtain a response result with respect to a corresponding slave 1 a, the
data is outputted from the CPU module 20 to the communication module 30 and
from the communication module 30 to the bluetooth module 31 , respectively.
Finally, the data is transferred to the bluetooth module of the slave 1 a. The
slave 1 a transfers a corresponding response data to the bluetooth module 31 of
the communication module 30 through the bluetooth module of the slave 1 a.
The bluetooth module 31 transfers a corresponding response data to the
communication module 30 and the CPU module 20, respectively.
The bluetooth module 31 of the communication module 30 may be
formed of a plurality of bluetooth modules for thereby achieving a wireless
communication with each slave (a, b, c .) based on a 1 :1 match or may be
formed of a single bluetooth module for thereby achieving a wireless
communication with a corresponding slave a, b, c... based on a program. In the
case that the bluetooth module 31 of the communication module 30 is formed of
a plurality of bluetooth modules for thereby achieving a 1 :1 wireless
communication with respect to each slave (a, b, c...), the system may be getting
complicated, and a lot of space is needed. More preferably, a single bluetooth
module could be provided in the communication module 30 for thereby
achieving a wireless communication with a corresponding slave (a, b, c .)
based on a program.
When the communication module 30 has one bluetooth module 31 in
order to achieve a wireless communication with respect to a plurality of slaves
(a, b, c...), respectively, the control data from the CPU module 20 should be
separately recognized based on each slaves (a, b, c...), so that the
communication module 30 can recognize a corresponding control data and can
transfer a corresponding control data to each slave (a, b, c.) through the
bluetooth module 31.
Therefore, a slave designation code is inserted into an actual control
data code between a start code and an end code of a data packet from the CPU
module 20 for thereby recognizing each slave (a, b, c...), so that the
communication module 30 recognizes the same and transfer to a corresponding
slave (a, b, c, ...) through the bluetooth module 31.
In the present invention, the bluetooth module 31 is installed in the
communication module 30 of the PLC, so that the communication module 30
can directly communicate with the CPU module 20 of the PLC, and the
communication module 30 can communicate with the bluetooth module 31.
Therefore, the slaves (a, b, c, ...) of the PLC having the bluetooth module can
communicate with the PLC based on a wireless method.
Industrial Applicability
As described above, in the PLC having a wireless communication
function according to the present invention, a bluetooth module capable of
supporting a local area network wireless communication is installed in a
communication module of the PLC, so that a wireless communication is
achieved with a peripheral device of a PLC through the communication module.
Therefore, the construction of the system is simplified. It is possible to
overcome a limited space problem. An easier installation and low cost
maintenance are achieved in the present invention.
The present invention is not limited to the above embodiment. As the
present invention may be embodied in several forms without departing from the
spirit or essential characteristics thereof, it should also be understood that the
above-described examples are not limited by any of the details of the foregoing
description, unless otherwise specified, but rather should be construed broadly
within its spirit and scope as defined in the appended claims, and therefore all
changes and modifications that fall within the meets and bounds of the claims,
or equivalences of such meets and bounds are therefore intended to be
embraced by the appended claims.
Claims
1. In a PLC (Programmable Logic Controller) that includes a power
module, a CPU (Central Processing Unit) module, and a communication module,
a PLC having a wireless communication function that is characterized in that a
PLC slave having a bluetooth module can communicate with a PLC based on a
wireless communication method in such a manner that a bluetooth module
capable of supporting a local area network wireless communication is installed
in the communication module, so that the CPU module communicates with the
communication module, and the communication module communicates with the
bluetooth module.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020030040609A KR20050000051A (en) | 2003-06-23 | 2003-06-23 | A programmable logic controller using wireless communication |
| KR10-2003-0040609 | 2003-06-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004114630A1 true WO2004114630A1 (en) | 2004-12-29 |
Family
ID=33536187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2004/000557 Ceased WO2004114630A1 (en) | 2003-06-23 | 2004-03-16 | Plc having wireless communication function |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20050000051A (en) |
| WO (1) | WO2004114630A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009008566A1 (en) * | 2007-07-09 | 2009-01-15 | Omnipas Inc. | Power line/ wireless communication equipment, broadband over power line communication system having the same, and method thereof |
| WO2009053261A1 (en) * | 2007-10-24 | 2009-04-30 | Schneider Electric Industries Sas | Automation rig operating by wireless link |
| US7933668B2 (en) * | 2005-10-26 | 2011-04-26 | Rockwell Automation Technologies, Inc. | Wireless industrial control user interface with configurable software capabilities |
| FR3096131A1 (en) * | 2019-05-17 | 2020-11-20 | Cetenis | WATER HEIGHT SIMULATION DEVICE AND PROCEDURE FOR VERIFYING THE WATER HEIGHT MEASUREMENT OF MEASURING EQUIPMENT BY THIS DEVICE |
| CN115442409A (en) * | 2021-05-18 | 2022-12-06 | 艾欧史密斯(中国)热水器有限公司 | Interconnection system and communication method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101154283B1 (en) * | 2011-04-13 | 2012-06-13 | 주식회사 케이티이엔지 | Wireless control system between training kit and experiment equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020029730A (en) * | 2000-10-13 | 2002-04-19 | 정대제 | System for monitoring and controlling environment facilities remotely |
| KR20020041849A (en) * | 2000-11-29 | 2002-06-05 | 현웅근 | Development of near fild wireless communication for multiple PLC controller |
| KR20020045057A (en) * | 2000-12-07 | 2002-06-19 | 윤종용 | Home netwok system and controlling method using a refrigerator |
| KR20030012123A (en) * | 2001-07-30 | 2003-02-12 | 현대자동차주식회사 | System for running information media in an automobile factory |
-
2003
- 2003-06-23 KR KR1020030040609A patent/KR20050000051A/en not_active Ceased
-
2004
- 2004-03-16 WO PCT/KR2004/000557 patent/WO2004114630A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020029730A (en) * | 2000-10-13 | 2002-04-19 | 정대제 | System for monitoring and controlling environment facilities remotely |
| KR20020041849A (en) * | 2000-11-29 | 2002-06-05 | 현웅근 | Development of near fild wireless communication for multiple PLC controller |
| KR20020045057A (en) * | 2000-12-07 | 2002-06-19 | 윤종용 | Home netwok system and controlling method using a refrigerator |
| KR20030012123A (en) * | 2001-07-30 | 2003-02-12 | 현대자동차주식회사 | System for running information media in an automobile factory |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7933668B2 (en) * | 2005-10-26 | 2011-04-26 | Rockwell Automation Technologies, Inc. | Wireless industrial control user interface with configurable software capabilities |
| US9268320B2 (en) | 2005-10-26 | 2016-02-23 | Rockwell Automation Technologies, Inc. | Wireless industrial control user interface with configurable software capabilities |
| WO2009008566A1 (en) * | 2007-07-09 | 2009-01-15 | Omnipas Inc. | Power line/ wireless communication equipment, broadband over power line communication system having the same, and method thereof |
| WO2009053261A1 (en) * | 2007-10-24 | 2009-04-30 | Schneider Electric Industries Sas | Automation rig operating by wireless link |
| FR2923127A1 (en) * | 2007-10-24 | 2009-05-01 | Schneider Electric Ind Sas | AUTOMATED EQUIPMENT OPERATING BY WIRELESS CONNECTION. |
| FR3096131A1 (en) * | 2019-05-17 | 2020-11-20 | Cetenis | WATER HEIGHT SIMULATION DEVICE AND PROCEDURE FOR VERIFYING THE WATER HEIGHT MEASUREMENT OF MEASURING EQUIPMENT BY THIS DEVICE |
| CN115442409A (en) * | 2021-05-18 | 2022-12-06 | 艾欧史密斯(中国)热水器有限公司 | Interconnection system and communication method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20050000051A (en) | 2005-01-03 |
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