CN114598572A - Method for machine tool networking and industrial gateway - Google Patents
Method for machine tool networking and industrial gateway Download PDFInfo
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- CN114598572A CN114598572A CN202210314015.XA CN202210314015A CN114598572A CN 114598572 A CN114598572 A CN 114598572A CN 202210314015 A CN202210314015 A CN 202210314015A CN 114598572 A CN114598572 A CN 114598572A
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- 238000012544 monitoring process Methods 0.000 abstract description 9
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
- H04L61/256—NAT traversal
- H04L61/2585—NAT traversal through application level gateway [ALG]
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
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- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/45595—Network integration; Enabling network access in virtual machine instances
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Abstract
The invention provides a method for machine tool networking and an industrial gateway, belongs to the field of machine tool networking equipment, and particularly relates to an industrial gateway which enables machine tools to be networked without changing a machine tool network structure. And configuring the IP address of the upper network interface as the IP address in the upper network, and configuring the IP address of the local interface to be in the same network segment with the IP address of the machine tool numerical control system to be networked. Configuring the IP address of the virtual server to be the same as the IP address of the upper network interface, and establishing the virtual server capable of calling the upper network interface; and configuring the IP address of the virtual client to be the same as the IP address of the local interface, establishing the virtual client capable of calling the local port, and monitoring the protocol port of the machine tool numerical control system to be networked by the virtual client. The connection between the virtual client and the virtual server is established through NAT forwarding and port mapping, so that the machine tool numerical control system to be networked can communicate with an upper network, and the function of reading data in the machine tool numerical control system through the upper network is realized.
Description
Technical Field
The invention provides a method for machine tool networking and an industrial gateway, belongs to the field of numerical control machine tool equipment, and particularly relates to an industrial gateway which enables machine tools to be networked without changing a machine tool network structure.
Background
How to realize real-time monitoring and analysis of the operation condition of the machine tool, further improving the operation efficiency of the machine tool and having important practical significance for improving the management level and the production efficiency of enterprises. The method comprises the steps of monitoring and managing the numerical control machine tool based on the industrial internet, acquiring the running state of the numerical control machine tool in real time, transmitting the acquired data to an industrial cloud platform (cloud computing platform) through the industrial internet, and analyzing and processing the data by using a model and an intelligent algorithm on the industrial cloud platform so as to realize the optimized running and the services of fault early warning, equipment health degree analysis and the like of the machine tool.
However, the nc system of the nc machine is generally strictly limited by the manufacturer of the nc system, and most manufacturers set the network structure of the nc system to a fixed format, and solidify IP addresses for communication of each function unit of the machine tool.
Taking siemens 802Dsl Plus version of the numerical control system as an example, the numerical control system restricts modification of the IP address and subnet mask, and no gateway address is set in the numerical control system. The fixed IP address of the system is 169.254.11.22, and according to the definition of the IP network, the address belongs to a private network segment, that is, a network segment acquired when there is no DHCP service in the network, and the state of the private network segment is limited or connectionless, so the numerical control system cannot be connected to an upper network in the network.
Taking siemens 840D numerical control system as an example, the numerical control system is connected with a frequency converter, a servo controller and other driving units needing communication, and as a manufacturer of the numerical control machine sets a fixed IP address for the numerical control system. However, when the numerical control systems of a plurality of machine tools are networked, the same IP addresses cannot exist at the same time, and if the IP addresses of the numerical control systems are modified, a communication fault that other devices in the machine tools cannot be connected with the numerical control systems occurs, and the machine tools cannot be connected to an upper network.
In summary, because the IP address of the numerical control system is fixedly set by the manufacturer, and the numerical control system does not have a gateway address, and the internal communication network of the numerical control machine cannot be modified, the existing numerical control system is difficult to connect the machine with the upper network.
Disclosure of Invention
The invention aims to provide a method for networking a machine tool and an industrial gateway, which are used for solving the problem that the machine tool is limited by a network structure and is difficult to network.
In order to achieve the purpose, the invention provides an industrial gateway for machine tool networking, which comprises an upper network interface for connecting an upper network and a local interface for connecting a machine tool numerical control system to be networked, wherein the IP address of the upper network interface is configured into an IP address in the upper network, and the IP address of the local interface is configured to ensure that the IP address of the local interface and the IP address of the machine tool numerical control system to be networked are in the same network segment; establishing a virtual server for calling an upper network interface and a virtual client for calling a local interface, configuring the IP address of the virtual server to be the same as that of the upper network interface, configuring the IP address of the virtual client to be the same as that of the local interface, and configuring the virtual client to monitor a protocol port of a machine tool numerical control system to be networked; establishing NAT forwarding, and forwarding the IP address of the virtual client to the IP address of the virtual server; and establishing port mapping, and mapping a protocol port of the machine tool numerical control system to be networked monitored by the virtual client to a set port of the virtual server.
And configuring the IP address of the local interface of the industrial gateway according to the IP address of the machine tool numerical control system to be networked so as to enable the IP address to be in the same network segment as the IP address of the machine tool numerical control system to be networked. Configuring the IP address of the virtual server to be the same as the IP address of the upper network interface, and establishing the virtual server capable of calling the upper network interface; and configuring the IP address of the virtual client to be the same as the IP address of the local interface, establishing the virtual client capable of calling the local port, and monitoring the protocol port of the machine tool numerical control system to be networked by the virtual client. The connection between the virtual client and the virtual server is established through NAT forwarding and port mapping, so that the machine tool numerical control system to be networked can communicate with an upper network, and the function of reading data in the machine tool numerical control system through the upper network is realized.
Further, in the above gateway, the upper network interface is a WAN port, a wifi module or a cellular mobile communication module, and is connected to the upper network through the WAN port, the wifi module or the cellular mobile communication module.
The upper network interface of the industrial gateway can adopt a physical interface WAN port, and the WAN port can be connected with a database storage server of an upper network through a network cable. The upper network interface of the industrial gateway can also adopt a wifi module or a cellular mobile communication module to realize the wireless connection between the industrial gateway and the upper network.
Further, the local interface is a LAN interface, and the WAN interface and the LAN interface are both RJ45 interfaces.
The local interface LAN port and the upper network interface of the industrial gateway are both RJ45 interfaces, and the connection between the industrial gateway and a machine tool numerical control system or an upper network can be realized by adopting an RJ45 network cable.
The invention also provides a method for machine tool networking, comprising the following steps:
1) connecting an industrial gateway with a machine tool numerical control system to be networked and an upper network, wherein the industrial gateway comprises an upper network interface for connecting the upper network and a local interface for connecting the machine tool numerical control system to be networked, configuring the IP address of the upper network interface as the IP address in the upper network, and configuring the IP address of the local interface to ensure that the IP address of the local interface and the IP address of the machine tool numerical control system to be networked are in the same network segment;
2) establishing a virtual server for calling an upper network interface in the industrial gateway, and configuring the IP address of the virtual server to be the same as the IP address of the upper network interface; a virtual client for calling a local interface is also established in the industrial gateway, the IP address of the virtual client is configured to be the same as that of the local interface, and the virtual client is configured to monitor a protocol port of the machine tool numerical control system to be networked;
3) establishing NAT forwarding, and forwarding the IP address of the virtual client to the IP address of the virtual server; and establishing port mapping, and mapping a protocol port of the machine tool numerical control system to be networked monitored by the virtual client to a set port of the virtual server.
Further, in the above method, the upper network interface is a WAN port, a wifi module or a cellular mobile communication module, and is connected to the upper network through the WAN port, the wifi module or the cellular mobile communication module.
Further, in the above method, the local interface is a LAN port, and the WAN port and the LAN port are both RJ45 interfaces.
Drawings
Fig. 1 is a schematic network structure diagram of an industrial gateway in an embodiment of a gateway of the present invention;
fig. 2 is a schematic circuit diagram of an industrial gateway in an embodiment of the gateway of the present invention;
FIG. 3 is a schematic diagram of a network structure of machine tool networking in an embodiment of the gateway of the present invention;
fig. 4 is a block diagram of a machine tool networking acquisition system in an embodiment of the gateway of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
The gateway embodiment comprises the following steps:
the invention provides an industrial gateway for machine tool networking, which can realize the networking function of machine tools on the basis of not changing the network structure of the machine tools. The network structure of the industrial gateway is shown in fig. 1, and comprises a virtual client and a virtual server, wherein the virtual client is used for connecting numerical control machine equipment, the virtual server is used for connecting an upper network, and the upper network is an upper local area network or a wide area network. And establishing communication connection between the virtual client and the virtual server through port mapping and NAT forwarding so as to realize the networking function of the machine tool.
The internal circuit structure of the industrial gateway is shown in fig. 2, and comprises a power supply chip, a wireless routing chip, a switching control chip, an ethernet control chip, a data memory, a program memory and a clock module. The power supply chip supplies power to the wireless routing chip, the exchange control chip and the Ethernet control chip; the wireless routing chip calls data and programs in the memory to realize communication connection between the virtual client and the virtual server; the exchange control chip calls a port monitoring and forwarding program to realize communication connection between the virtual client and the numerical control machine; and the Ethernet control chip calls the information caching program to establish communication connection between the virtual server and an upper network.
The local interface of the industrial gateway comprises 3 local area network interfaces, namely a LAN1, a LAN2 and a LAN3, and also comprises 1 upper network interface (WAN port) and 1 power supply interface. In addition, the industrial gateway also comprises a cellular mobile communication module and a 4G/5G card slot. The cellular mobile communication module is specifically 1 wifi antenna module and 1 4G/5G antenna module. The local area network interface and the upper network interface are both RJ45 network interfaces. The 4G/5G card slot is used for inserting a 4G/5G card, so that the 4G/5G communication function of the industrial gateway is realized.
The local area network interface of the industrial gateway and the machine tool are connected through an RJ45 network cable, the upper network interface of the industrial gateway and the database storage server of the upper network are also connected through an RJ45 network cable, or the upper network is connected through a wifi antenna, or the upper network is connected through a 4G/5G antenna, and a network structure among the machine tool, the industrial gateway and the upper network is formed. The power interface is used for inputting DC24V, and then converting DC24V into DC5V and DC3.3V through the power chip, thereby supplying power to each chip and module.
The industrial gateway is also provided with a reset switch rst, a power supply indicator light, a LAN communication indicator light and a WAN communication indicator light. After the industrial gateway is powered on, the power indicator lamp is turned on to indicate that the industrial gateway is normally powered on. If the LAN communication indicator lamp is lighted, the connection between the corresponding LAN port and the numerical control system is successful; if the WAN communication indicator lamp is lighted, the connection between the corresponding WAN port and the upper network is successful.
Siemens 802Dsl Plus numerical control system has a fixed IP address: 169.254.11.22, the address belongs to a private network segment as defined by the IP network. Taking the numerical control system of siemens 802Dsl Plus version as an example, the following introduction is made to the industrial gateway:
1) one of the local area network interfaces (such as a LAN1 port) of the industrial gateway is connected with a communication interface of the numerical control system of the machine tool, physical connection between the industrial gateway and the machine tool is established, and then the IP address of the LAN1 port is configured, so that the IP address of the LAN1 port and the IP geology of the numerical control system are in the same private network segment 169.254.11.1, and the numerical control system of the machine tool and the industrial gateway are communicated.
2) Connecting an upper network interface of the industrial gateway with an upper network, and when a WAN port of the industrial gateway is connected with a database storage server of an upper local area network by adopting an RJ45 network cable, configuring an IP address of the WAN port into an IP address in the upper network, wherein the upper network adopts C-type IP addresses such as 192.168.1.10 and the like.
3) And starting an information caching program and establishing a virtual server. When the RJ45 network cable is used to connect the WAN port of the industrial gateway with the upper layer network, the IP address of the virtual server is configured as the IP address of the upper layer network interface, that is, the IP address of the virtual server is configured as 192.168.1.10, the port is set arbitrarily, and the network connection between the industrial gateway and the upper layer local area network is realized.
When a wifi or 4G/5G wireless connection mode is adopted, network connection between the industrial gateway and the upper local area network is achieved by binding the address of the DDNS to the fixed domain name of the upper wide area network.
4) Establishing a virtual client, starting a port and a monitoring and forwarding program, configuring the IP address of the virtual client to be the same as the IP address of a LAN1 port according to the IP address 169.254.11.22 of the Siemens 802Dsl Plus numerical control system and the protocol port 102 of the numerical control system, configuring the virtual client to monitor the protocol port 102, and establishing the connection between the virtual client and the machine tool numerical control system.
5) And establishing NAT (Network Address transfer) and transferring the IP Address of the virtual client to the IP Address of the virtual server, so that the virtual server can be connected to the virtual client and further connected to the machine tool numerical control system by connecting the upper local area Network.
6) And establishing port mapping, and mapping the protocol port 102 monitored by the virtual client to a set port of the virtual server, so that the information received by the virtual server through the WAN port and the set port is sent to the virtual client and simultaneously sent to the protocol port 102 of the Siemens numerical control system.
By adopting the invention, the connection between the numerical control system of the machine tool and the upper network can be realized, and the function of reading the data in the machine tool through the upper network can be further realized. As shown in fig. 3 and 4, the numerical control system of the machine tool is connected with a data acquisition workstation or a switch through an industrial gateway to form a networked acquisition system of the machine tool.
The monitoring and management factors of each machine tool are different, the data acquisition workstation needs to pertinently perform individualized data acquisition on each machine tool, and the data acquisition contents, the communication frequencies and the like of numerical control machines of different brands or different types of the same brand are different, so that a database is established in the data acquisition workstation according to the configuration information and the communication protocols of numerical control systems of different brands and different types of the same brand, so that the database can be called in the data acquisition process when the machine tool works. The configuration information includes the IP address, brand, type and port type of the numerical control system.
During the working process of the machine tool, the data acquisition workstation calls a communication protocol corresponding to the configuration information from a pre-stored internal database according to the configuration information of each numerical control system in the networked acquisition system, so as to communicate with the corresponding numerical control system. Therefore, the data acquisition workstation can acquire real-time machine tool working data such as voltage, current, temperature, vibration and other information on line, so that the machine tool can be monitored in a networking mode in real time.
The method comprises the following steps:
the invention provides a method for machine tool networking, which comprises the following steps:
and S1, connecting the local interface LAN port of the industrial gateway with the communication interface of the machine tool numerical control system, and setting the local interface to enable the IP address of the local interface LAN port and the IP address of the machine tool numerical control system to be in the same private network segment.
And S2, connecting the upper network interface of the industrial gateway with the upper network, and when the WAN port of the industrial gateway is connected with the upper local area network by adopting an RJ45 network cable, configuring the IP address of the WAN port of the upper network interface as the IP address in the upper network, wherein the upper network adopts the C-type IP address of 192.168.1.10 and the like.
And S3, starting the information caching program and establishing the virtual server. When the RJ45 network cable is used to connect the WAN port of the industrial gateway with the upper layer network, the IP address of the virtual server is configured as the IP address of the upper layer network interface, that is, the IP address of the virtual server is configured as 192.168.1.10, the port is set arbitrarily, and the network connection between the industrial gateway and the upper layer local area network is realized.
When a wifi or 4G/5G wireless connection mode is adopted, network connection between the industrial gateway and the upper local area network is achieved by binding the address of the DDNS to the fixed domain name of the upper wide area network.
S4, establishing a virtual client, starting a port, monitoring and forwarding programs, configuring the virtual client to monitor the protocol port 102 according to the IP address of the machine tool numerical control system to be networked and the protocol port 102 of the numerical control system, wherein the IP address of the virtual client is the same as that of the LAN port, and establishing the connection between the virtual client and the machine tool numerical control system.
And S5, establishing NAT (Network Address transfer) and transferring the IP Address of the virtual client to the IP Address of the virtual server, so that the virtual server can be connected to the virtual client and further connected to the machine tool numerical control system by connecting the virtual server through the upper layer local area Network.
S6, establishing port mapping, mapping the protocol port 102 monitored by the virtual client to the set port of the virtual server, so that the virtual server sends the information received by the WAN port and the set port to the virtual client and simultaneously to the protocol port 102 of the Siemens numerical control system.
The method for machine tool networking establishes a virtual server and a virtual client in an industrial gateway, and establishes communication connection between the virtual client and a numerical control system and communication connection between the virtual server and an upper network by configuring corresponding IP addresses; and communication connection between the virtual client and the virtual server is established through NAT forwarding and port mapping, and finally connection between the machine tool numerical control system and an upper network is realized.
The industrial gateway in this embodiment is an industrial gateway for machine tool networking in the gateway embodiment, and as to the structure of the industrial gateway, it is clearly understood that what has been described in the gateway embodiment is not described here again. By adopting the invention, the communication interaction between the numerical control system of the machine tool and the upper network can be realized, and the on-line monitoring of the working state of the machine tool can be further realized.
Claims (6)
1. An industrial gateway for machine tool networking is characterized by comprising an upper network interface for connecting an upper network and a local interface for connecting a machine tool numerical control system to be networked, wherein the IP address of the upper network interface is configured into the IP address in the upper network, and the IP address of the local interface is configured to ensure that the IP address of the local interface and the IP address of the machine tool numerical control system to be networked are in the same network segment; establishing a virtual server for calling an upper network interface and a virtual client for calling a local interface, configuring the IP address of the virtual server to be the same as that of the upper network interface, configuring the IP address of the virtual client to be the same as that of the local interface, and configuring the virtual client to monitor a protocol port of a machine tool numerical control system to be networked; establishing NAT forwarding, and forwarding the IP address of the virtual client to the IP address of the virtual server; and establishing port mapping, and mapping a protocol port of the machine tool numerical control system to be networked monitored by the virtual client to a set port of the virtual server.
2. The industrial gateway for networking of machine tools of claim 1, wherein the upper network interface is a WAN port, a wifi module or a cellular mobile communication module, and the upper network is connected through the WAN port, the wifi module or the cellular mobile communication module.
3. The industrial gateway for networking of machine tools of claim 2, wherein the local interface is a LAN port, and the WAN port and the LAN port are both RJ45 interfaces.
4. A method for machine tool networking, comprising the steps of:
1) connecting an industrial gateway with a machine tool numerical control system to be networked and an upper network, wherein the industrial gateway comprises an upper network interface for connecting the upper network and a local interface for connecting the machine tool numerical control system to be networked, configuring the IP address of the upper network interface as the IP address in the upper network, and configuring the IP address of the local interface to ensure that the IP address of the local interface and the IP address of the machine tool numerical control system to be networked are in the same network segment;
2) establishing a virtual server for calling an upper network interface in the industrial gateway, and configuring that the IP address of the virtual server is the same as the IP address of the upper network interface; a virtual client for calling a local interface is also established in the industrial gateway, the IP address of the virtual client is configured to be the same as that of the local interface, and the virtual client is configured to monitor a protocol port of the machine tool numerical control system to be networked;
3) establishing NAT forwarding, and forwarding the IP address of the virtual client to the IP address of the virtual server; and establishing port mapping, and mapping a protocol port of the machine tool numerical control system to be networked monitored by the virtual client to a set port of the virtual server.
5. The method for networking a machine tool according to claim 4, wherein the upper network interface is a WAN port, a wifi module or a cellular mobile communication module, and the upper network is connected through the WAN port, the wifi module or the cellular mobile communication module.
6. The method for networking a machine tool of claim 5, wherein the local interface is a LAN port, and the WAN port and the LAN port are both RJ45 interfaces.
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