WO2020048747A1

WO2020048747A1 - Method for starting up a field device, and field device

Info

Publication number: WO2020048747A1
Application number: PCT/EP2019/071706
Authority: WO
Inventors: Nikolai Fink; Wolfgang Drahm; Alfred Rieder; Peter KLÖFER; Thomas Wilhelm; Thomas Moore
Original assignee: Endress+Hauser Flowtec Ag
Priority date: 2018-09-06
Filing date: 2019-08-13
Publication date: 2020-03-12

Abstract

The invention relates to a method (100) for starting up a field device (1) in a network (10) of field devices, wherein the field device (1) comprises a sensor (1.1) for detecting a physical or chemical measuring variable and for generating a measuring value corresponding to the measuring variable, wherein the field device comprises a point-to-point connection module (1.2) for data transmission with at least one adjacent field device and/or an edge device, and wherein the field device comprises an electronic measuring/operating circuit (1.3) designed to operate the sensor and the point-to-point connection module, said method comprising at least the following steps: (101) detecting an address signal (S0) of at least one adjacent field device (2) and/or edge device (3) and respectively setting up a point-to-point communication; (102) requesting start-up data and/or back-up data from at least one adjacent field device and/or edge device by sending out a request signal (S1); (103) selecting a response signal (S2) of at least one responding field device and/or the edge device and receiving the configuration data by means of the response signal; (104) evaluating the start-up data and/or back-up data; (105) setting up the field device and/or storing the back-up data; and (106) starting up the field device.

Description

Method for starting up a field device and a field device

The invention relates to a method for starting up a field device of measurement and automation technology in a network of field devices of measurement and

Automation technology after replacement of a field device to be removed and such a field device

The commissioning of field devices is already state of the art

DE102009028655A1 teaches a field device to be put into operation by means of a

Let the bus system communicate with a higher-level control system. This has the disadvantage that the higher-level control system must have all possible data available for all possible field devices. In addition, data collection in a bus system with many field devices can take a long time since a data transmission bandwidth of the bus system is limited.

The object of the invention is therefore to propose a simplified method for starting up a field device and such a field device. The object is achieved by a method according to independent claim 1 and by a field device according to independent claim 7.

A method according to the invention for the independent commissioning of a

Field devices of measurement and automation technology in a network of field devices of measurement and automation technology, the field device having a measurement sensor for detecting a physical or chemical measurement variable and for generating at least one measurement value corresponding to the measurement variable, the field device being a point-to-point Connection module for data transmission with at least one adjacent field device and / or an edge device, wherein the field device has an electronic measuring / operating circuit, which is set up to operate the sensor and the point-to-point connection module, comprises at least following steps: Detecting an address signal of at least one neighboring field device or edge device and setting up a point-to-point communication in each case;

Requests for commissioning data and / or backup data from at least one neighboring field device and / or the edge device by sending one

Request signal;

Selecting a response signal from at least one responding field device and / or the edge device, causing the configuration data to be transmitted, and receiving the configuration data by means of the response signal;

This can be caused, for example, by the field device to be commissioned.

Evaluating the configuration data;

Setting up the field device and / or flipping the backup data;

Commissioning of the field device.

In a variant of the invention, the network of field devices can also have one or more edge devices via which the network can be connected to a cloud. The field devices and / or the at least one edge device are set up, for example, to send out address signals at time intervals, by means of which address signals a possibility of contacting is transmitted. Alternatively, the field device to be commissioned can request the transmission of address signals. The point-to-point communication can then be done by means of knowledge of the

Contact options can be set up.

In one embodiment of the method, the request signal transmits the required signal

Parameters of the commissioning data and / or backup data and in particular configuration data. This enables the requested field device or edge device to confirm or deny the presence of the requested data.

In one embodiment, when several response signals are selected, a

Plausibility check carried out, in particular taking into account a date when the data was placed on the field device emitting the response signal. For example, the most recent date response signal may be preferred.

For example, a last known functionality of the exchanged field device can also be used to select a response signal.

In one embodiment, the commissioning data and / or backup data comprise at least one of the following elements:

Flistorien data, parameterization, process events, process plausibility,

Process characteristic, measurement setting, I / O data, setting data of a firewall of the field device.

History data include, for example, whether the field device is outside of it

Specification, for example, was operated at too high temperatures.

For example, history data can contain information about a

Coverage recognized cover include. History data can too

recorded process values such as flow, temperature, or pressure. This is exemplary and should not be interpreted as restrictive. The person skilled in the art will select which history data are to be transmitted to a field device to be commissioned, in accordance with existing needs. Data relating to parameterization can include settings of the field device with regard to the wiring or scaling of an I / O interface. It can be important to transmit a connection between output current and measured values to a measuring device to be commissioned for a current-controlled output. Parameterization data can also

Bus addresses that include their own and / or bus addresses from other field devices. Further data relating to process events include, for example, important events of a process to be monitored that were recorded by the former field device. Derived or independent of this, data regarding process plausibility can include information about measured values of a process to be questioned. Data regarding a

Process characteristics include, for example, measured value ranges, which

in particular broken down into different times of the day. Of

Furthermore, setting data of a firewall of the field device can be called up, with which, for example, a secure connection to a bus system can be established. In one embodiment, the point-to-point connection module is a radio module and in particular a Bluetooth module, or the point-to-point connection module is an Ethernet communication module.

The point-to-point connection can, for example, be based on the so-called

"Transmission Control Protocol", based on TCP and can be wired or wireless.

By setting up a point-to-point connection by radio, the field device can be put into operation in a particularly simple manner.

In one embodiment, the point-to-point connection module is an Ethernet communication module. In this case, the point-to-point connection module can be radio or wired.

In one embodiment, the field device transmits after an operating period

Configuration data and / or backup data to at least one adjacent field device. In order to enable an exchange with a new field device, the field device transmits at least once, and preferably several times, commissioning data and / or

Backup data preferably with a date stamp on at least one neighboring field device.

As a result, after a failure of the field device, its successor can obtain the required data from neighboring field devices and quickly assume an operational state.

A field device according to the invention in measuring and automation technology comprises: a measuring sensor for detecting a physical or chemical measured variable and for generating at least one corresponding to the measured variable

Reading; a point-to-point connection module for exchanging information with at least one neighboring field device; an electronic measuring / operating circuit, which is set up to

Operate the sensor and the point-to-point connection module; wherein the point-to-point connection module is set up to send out request signals for requesting commissioning data and / or backup data and to receive response signals.

In one embodiment, the point-to-point connection module is a radio module and in particular a Bluetooth module.

The invention is described below using exemplary embodiments.

1 outlines a schematic network comprising a field device to be integrated into a network, neighboring field devices, and an edge device;

2 outlines an inventive method for starting up a field device to be integrated into a network.

1 outlines a network 10 comprising a field device of measurement and automation technology 1 to be integrated into the network, adjacent field devices 2 of measurement and automation technology and an edge device 3 which is used for this purpose

is set up to ensure a connection of the network 10 to a higher-level network (not outlined), such as a cloud. However, a method according to the invention for starting up a field device can also be carried out in a network without an edge device. The neighboring field devices 2 and possibly the edge device send out address signals SO at time intervals, by means of which address signals a possibility of contacting the transmitting field device is provided. The field device 1 to be integrated can, after detecting an address signal, send out a request signal S1 in order to request the required data, which data can then be transmitted by means of at least one response signal S2. The alignment of the signal symbols is to be interpreted symbolically and not restrictively. The field device 1 of the measuring and automation technology comprises a measuring sensor 1 .1 for detecting a physical or chemical measured variable and for generating at least one corresponding to the measured variable

Reading. The field device has a point-to-point connection module 1.2, which is a radio module 1.21 and preferably a Bluetooth radio module. A Electronic measuring / operating circuit 1.3 of the field device 1 to be integrated is set up to operate the measuring sensor and the point-to-point connection module. As an alternative to the embodiment shown here, the field device can also be part of a wired network and, for example, via a

Ethernet-based interface to establish or establish a point-to-point connection to neighboring field devices or an edge device.

2 outlines a sequence of a method 100 according to the invention, wherein in a first method step 101 an address signal SO of at least one adjacent field device 2 and / or edge device 3 is detected and selected and point-to-point communication is set up in each case. In a second method step 102, commissioning data and / or backup data from at least one adjacent field device and / or edge device are requested by sending out a request signal S1. The request signal can, for example, required parameters of the

Transfer commissioning data and / or backup data. A quantity of data to be transmitted can thus be reduced between the field device to be commissioned and at least one field device / edge device of the network. In a third method step 103, an answer signal S2 of at least one answering field device and / or one answering edge device is selected, a transmission of the configuration data is initiated, and commissioning data and / or

Receive backup data using the response signal. The cause of the

Configuration data can be done by the field device to be commissioned or by a field device or edge device of the existing network. If several response signals are selected and thus several point-to-point communications are set up, a plausibility check can be carried out.

For example, by means of a date of putting the commissioning data and / or backup data on the field device emitting the response signal, the most recent dataset or the most recent dataset can be selected with regard to the last known datum of the correct functioning of the exchanged field device. In a fourth method step 104, the commissioning data and / or backup data are evaluated. In a fifth method step 105, the field device is set up and / or the backup data is stored. The field device is put into operation in a sixth method step 106. After a predetermined operating time or event-triggered, the field device can transmit configuration data and / or backup data to at least one adjacent field device 2 or edge device 3. As a result, after a failure of the field device, its successor can obtain the required data from neighboring field devices and quickly assume an operational state.

Reference list

1 field device

1.1 Sensor

1.2 Point-to-point connection module 1.21 radio module

1.21 1 Bluetooth module

1.3 electronic measuring / operating circuit 2 adjacent field device

3 adjacent edge device

10 network

100 procedures

101 first process step

102 second process step

103 third process step

104 fourth step

105 fifth process step

106 sixth step

50 address signal

51 Request signal

S2 response signal

Claims

1. Method (100) for independently commissioning a field device (1) of measurement and automation technology in a network (10) of field devices of measurement and automation technology, the field device (1) being a measurement sensor (1.1) for detecting a physical or chemical Measured variable and for generating at least one measured value corresponding to the measured variable, the field device having a point-to-point connection module (1.2) for data transmission with at least one adjacent field device and / or an edge device, the field device having an electronic measurement / Operating circuit (1.3), which is set up to operate the sensor and the point-to-point connection module, the method comprising at least the following steps:

(101) detecting an address signal (SO) of at least one adjacent field device (2) and / or edge device (3) and setting up point-to-point communication in each case;

(102) Requests for commissioning data and / or backup data from at least one neighboring field device and / or edge device by sending one

Request signal (S1);

(103) selection of a response signal (S2) of at least one responding field device and / or the edge device,

Causing the configuration data to be transmitted and the configuration data received by means of the response signal;

(104) evaluation of the commissioning data and / or backup data;

(105) setting up the field device and / or flipping the backup data; (106) Commissioning of the field device.

2. The method (100) according to claim 1, wherein the request signal (S1) transmits required parameters of the commissioning data and / or backup data.

3. The method (100) according to claim 1 or 2, wherein when several response signals (S2) are selected, a plausibility check is carried out, in particular taking into account a date of the storage of the data on the field device emitting the response signal.

4. The method (100) according to claim 1, wherein the commissioning data and / or backup data comprises at least one of the following elements:

History data, parameterization, process events, process plausibility,

Process characteristic, measurement setting, I / O data, setting data of a firewall of the field device

5. The method (100) according to any one of the preceding claims, wherein the point-to-point connection module (1.2) is a radio module (1.21) and in particular a Bluetooth module (1 .21 1), or the point-to-point connection module is an ethernet communication module.

6. The method (100) according to claim 1, wherein the field device (1) transmits configuration data and / or backup data to at least one adjacent field device (2) or edge device (3) after an operating period.

7. Field device (1) of measurement and automation technology, comprising: a measurement sensor (1.1) for detecting a physical or chemical measurement variable and for generating at least one with the measurement variable

corresponding measured value; a point-to-point connection module (1 .2) for exchanging information with at least one neighboring field device (2) and / or at least one neighboring edge device (3); an electronic measuring / operating circuit (1 .3), which is set up to operate the sensor and the point-to-point connection module; wherein the point-to-point connection module is set up to send out request signals for requesting commissioning data and / or backup data and to receive response signals.

8. Field device (1) of measurement and automation technology according to claim 7, wherein the point-to-point connection module (1.2) is a radio module (1.21) and in particular a Bluetooth module (1 .21 1).