EP2165472A1 - System und verfahren zur steuerung von busvernetzten geräten über einen offenen feldbus - Google Patents
System und verfahren zur steuerung von busvernetzten geräten über einen offenen feldbusInfo
- Publication number
- EP2165472A1 EP2165472A1 EP07785923A EP07785923A EP2165472A1 EP 2165472 A1 EP2165472 A1 EP 2165472A1 EP 07785923 A EP07785923 A EP 07785923A EP 07785923 A EP07785923 A EP 07785923A EP 2165472 A1 EP2165472 A1 EP 2165472A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bus
- gateway
- subscriber
- configuration
- application
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
- G06F13/4081—Live connection to bus, e.g. hot-plugging
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
- H04L12/40013—Details regarding a bus controller
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
- H04L12/40045—Details regarding the feeding of energy to the node from the bus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40234—Local Interconnect Network LIN
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/4026—Bus for use in automation systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
Definitions
- the invention relates to a system and a method for controlling bus-networked devices with a gateway via an open fieldbus.
- the subject includes, in particular, the data networking, the subscriber configuration of the devices and the electrical supply of the devices with energy.
- Typical devices are industrial switching devices such as contactors, motor starters, circuit breakers and measuring sensors and similar devices.
- the aforementioned industrial switching devices and others are usually switched or monitored centrally in electrical installations via a control system, for example via a programmable logic controller (PLC).
- PLC programmable logic controller
- the switching devices are connected to the control unit (e.g., the PLC) via the control wiring lines.
- This usually consists of the lines that the switching device, here preferably a contactor, on and off and at the same time provide the necessary energy to switch the switching device and lines that return the signals from the switching device for monitoring to the control unit .
- Examples of signals for monitoring a switching device, in particular for a motor starter, are the status of the contactor position (on / off) or the status of the motor protection switch (on / off).
- the wiring and interconnection of the electrical switching devices with the control system is carried out by hand, typically by electricians.
- This work can often be a very time-consuming part of the cabinet design.
- the wiring is error-prone over many similar control lines, as they can be reversed, for example when laying in the cable channel and then connected to terminals of the wrong devices.
- the control cables must be connected to the individual switching devices in order to connect them electrically. For this purpose, further effort is required in the form that cut to length for laying the cables cable ducts and these must be mounted on the mounting plate, in which then the individual control cables can be installed.
- EP 0 779 640 A2 discloses providing bus-capable amplifier modules for drive arrangements of electrical switching devices.
- the electromagnetic or electronic amplifier arrangement is connected via an interface circuit with bus connections and on the one hand with supply power connections and on the other hand drive connections.
- the interface circuit is designed bi- or unidirectional.
- switching means for signals to be adopted by the bus for setting parameters of the amplifier module and / or the switching device and circuit means for the detection of signals to be transmitted to the bus via states of the amplifier module and / or the switching device are provided.
- a module is known from EP 0 637 784 A1, which is provided with a bus coupler, on the one hand with a
- the module can
- Forming shutdown commands by processing the measurement signals themselves and delivering them to the tripping system for a circuit breaker.
- DE 101 47 442 A1 discloses a method and a device as well as a control unit for monitoring a bus system with at least three
- a participant is formed as a parent and initiates each data transfer on the bus system.
- a second subscriber is formed as an element of a locking system of a lockable vehicle interior and a third party is outside the lockable vehicle interior formed.
- the first subscriber monitors the data transmission in such a way that, in at least one operating state of the vehicle and / or the bus system, the first subscriber initiates measures to prevent transmission of the data during each data transmission on the bus system which was not initiated by him.
- the bus system used is a LIN bus system.
- DE 101 47 446 A1 also discloses a method and a device for monitoring a bus system with at least two subscribers, of which at least one subscriber is configured as an authorized subscriber and monitors the data transmission on the bus system, a license plate being transmitted on each data transmission on the bus system and the tag can be uniquely assigned to a subscriber. If the data transmission is initiated by another than the one authorized subscriber, execution of the data to be transmitted is prevented. Again, a LIN bus system is used again.
- a communication control device in which a master station transmits a batch transmission frame to a plurality of slave stations and individual response frames are transmitted from the slave stations to the master station.
- DE 689 20 028 T2 discloses a cyclic reservation multiple access method and apparatus in a communication system, wherein access to the transmission medium in the communication network is provided with a unidirectional bus structure in a Faltbus or a Doppelbuskonfiguration and a plurality of stations between the Busses are connected, is provided.
- the network comprises two unidirectional, reverse transmission buses and a plurality of stations, each of which is connected to the two buses. Further, a headend is provided which generates time slots on the buses at regular intervals, each station requesting access to a slot.
- the DE 34 24 866 A1 discloses a method and an arrangement for the transmission of data, which are transmitted in a time division multiplex in digital form in a bus system.
- the bus system consists of a central control unit, a plurality of equivalent subordinate stations belonging to the control unit and at least one data bus line connecting all the subscribers.
- the object is achieved for a system according to the preamble of claim 1, characterized in that a single plug-in connection line is provided within the system for connecting bus users and gateway and for transmitting control and / or status data and energy.
- the object is achieved by the fact that the gateway expects no bus subscriber in an output nominal configuration and to take over at least one bus subscriber and generate a new target configuration with the at least one bus subscriber a configuration mode in the gateway is started.
- the object is achieved in that the switching device has at least one control input to query a previous switching device as a bus subscriber and / or a gateway (20) and a control output for selecting a subsequent switching device as another bus subscriber.
- the invention thus relates to a system with which actuators as bus subscribers, preferably industrial switching devices, such as circuit breakers or motor protection switch contactor combinations, via an application bus system, here preferably via a LIN bus, are networked data technology, with the aim of the control and connected industrial switching devices monitor.
- the system has at least one gateway, which is connected between an open fieldbus and actuators.
- the only pluggable connection cable connects the individual bus participants or actuators with each other and with the gateway. It is used to transfer data, namely control and / or status data and the transmission of energy to supply the bus subscribers and possibly other components of the system.
- the gateway is arranged between the open field bus and the connection line and has connection means for connection to the field bus, for connecting mains voltage and the connection line.
- control wiring to the industrial switching devices is replaced by a pluggable and easily mountable line connection system. Expensive and error-prone installations of the control wiring are eliminated and the use of cable ducts, which are necessary for laying cables, or the installation of the channels saved.
- Such wiring relates to the control lines, here preferably for a contactor, the line for switching on and off the contactor, and the status lines, here, for example, to query the switching position of the contactor or the status of a motor protection switch (on, triggered) are provided.
- Such devices may be, for example, industrial switching devices, such as circuit breakers, electronic motor protection relay or frequency converter.
- the system for controlling bus-connected devices with a gateway via an open field bus may have the following features individually or in combination with one another.
- a bus controller for monitoring the gateway is provided here.
- the gateway itself is advantageous at least one interface to the open field bus, at least one interface to an application bus for controlling and retrieving at least one actuator or bus participant lying on the application bus, and at least one data output for communication with at least one bus participant. It also proves to be advantageous if the gateway has at least one memory for remanent backup of a bus configuration which can be written by the bus controller and for securing the present bus configuration of the or an application bus.
- the gateway comprises at least a first feed socket for the supply of primary supply voltage and at least one second feed socket for the supply of an auxiliary voltage, which is transmitted to the bus participants or is passed through.
- the gateway can also be connectable or connected to at least one control line for addressing the first bus subscriber.
- the gateway has at least one status display for displaying operating states of bus subscribers and the bus communication and / or the at least one bus subscriber has at least one display for displaying the own operating status. As a result, a visual control of the proper operation of the system is always possible.
- the gateway advantageously has at least one actuating element for starting a bus configuration of the bus users connected via the application bus.
- the gateway checks via an application bus how many bus users are connected to the application bus, whereby the bus users are advantageously numbered consecutively.
- each bus subscriber can store his specific identification number and / or the gateway stores the identification numbers with zero voltage protection.
- this configuration can advantageously be retentively stored in the gateway (20) as a setpoint configuration or is stored there and control and / or Status data is interchangeable between or exchanged between the gateway and the bus users.
- the at least one bus subscriber or actuator it proves to be advantageous if it has at least one control input for polling a preceding bus subscriber and / or the gateway and a control output for selecting a subsequent bus subscriber. Furthermore, it can comprise at least one control and programming unit for implementing the bus communication and the functionality of the actuator application.
- the at least one bus subscriber can have a device for connecting to mains voltage. Furthermore, it advantageously has at least one device for looping through the data stream and / or the auxiliary voltage to a subsequent bus subscriber or actuator and / or for forwarding the auxiliary voltage to an actuator application.
- the at least one bus subscriber has at least one device for carrying out actor actions and / or at least one device for reporting actuator actions and / or actuator positions to the application bus, so that a communication of the actuator positions and actions via the application bus is possible.
- the at least one bus subscriber further advantageously has at least one device for writing an identification number through the gateway.
- the bus subscribers are advantageously consecutively numbered sequentially. Every single bus participant stores the specific one
- the application bus can be a LIN bus with which the control and / or status data and the execution of the configuration of the application bus can be processed or processed via a protocol, which consists in particular of LIN data frames with data lengths of 1 to 8 bytes. Basically, another structure with eg other data lengths is possible.
- a possible application bus configuration can be permanently enrolled in the gateway. Furthermore, it is possible for a written application bus configuration to be overwritten by the bus controller.
- the invention is based on the assumption that at least one actuator can be an electrical switching device.
- an actuator may in particular be a motor protection switch contactor combination.
- a plug-in module which on the one hand can have the actuator properties and on the other hand has at least one mechanical display for displaying actuator positions and / or at least one display for the own operating status.
- the actuator positions can be displayed by the plug-in module, which can be added to the actuators, so in particular switching devices. Instead of retrofitting the switching devices, it is sufficient to attach a plug-in module on this, which may also have corresponding connectors for connecting the connecting line.
- the plug-in module can have at least one digital input for the
- the plug-in module can advantageously have at least one circuit interruption for the actuator.
- a circuit interruption can be used for example for the electrical locking of a reversing starter.
- this can advantageously switch the auxiliary voltage to the contactor coil.
- the above-mentioned further features of such a plug-in module can also be advantageously provided just in such a motor protection switch contactor combination.
- the system may further be designed such that a power module is interposed in the row of or between the bus users, which loop through the data stream to the next bus subscriber and / or do not loop through the auxiliary voltage.
- a power module By interposing a power module, the 'linear' power supply is interrupted by bus users to bus users. However, the data connection and the primary voltage between the bus participants located in front of the power module and the bus station behind the power module are looped through. With the intermediate power module, a new feed-in for the following bus users is realized.
- an external voltage source is provided, which supplies an auxiliary voltage to the power module, which is transmitted to the next bus subscriber.
- the power module advantageously has at least one display for indicating the presence of the external auxiliary voltage. This makes it possible to control the application of the auxiliary voltage to the power module and thereby also to the at least one subsequent bus subscriber.
- At least one bus subscriber or actuator has a mechanical display for displaying actuator positions, so that these can also be read without current even without problems.
- At least one sensor may be arranged to detect physical quantities in the row of bus subscribers.
- a configuration mode advantageously proceeds after actuation of the actuating element.
- Fig. 2 is a flow chart for the representation of the system test and the
- 3A and 3B are block diagrams of the application bus system
- Fig. 5 shows a system consisting of a gateway, bus subscribers and a power module.
- a gateway 20 in FIG. 1C a bus subscriber in the form of a plug-in module 40 on a motor-protective circuit-contactor combination, and in FIG. 1B a power module 50, also referred to as PM, are shown as typical hardware components of an exemplary system.
- the gateway 20 has an interface to a higher-level control system, for example to an open field bus 2 (see FIG. 3A), such as a Profibus DP, DeviceNet or CANopen or another, whereby it is connected to the higher-level fieldbus system for data purposes.
- the gateway 20 controls via a ribbon cable 8, which is also shown in Figure 3A, the networked on an application bus 10, used as industrial switching devices bus nodes N1 to Nn.
- the gateway 20 has a first feed device 24 for the connection of a power supply 14 for own electronics and the electronics of the bus subscribers and a second feed device 25 for the connection of a power supply 16 of the bus subscribers.
- the latter is auxiliary voltage for the Aktorschen the bus subscribers, in which case, for example, the voltage or power supply of motor protection switch contactor combinations is provided.
- the gateway 20 has at least one light-emitting diode 28 which serves to indicate the status of operating states of the gateway and of the bus communication.
- the gateway 20 also has a configuration button 27 which serves to start the automatic bus configuration of the bus users; and at least one memory block is present in the gateway 20, which is used for the remanent backup of the bus configuration.
- plug-in module 40 is used, which is also referred to as SM, which is mechanically and electrically adapted to the contactor or is.
- the plug-in module 40 has two pin contacts 49, which serve for electrical connection to a contactor coil.
- This plug-in module takes over the control wiring.
- the contactor coil is electrically controlled and the contactor position is electrically interrogated.
- a switch position indicator 46 is provided, the mechanical - visible to the operator - indicates the switching position.
- the plug-in module 40 also has the following features: it switches the auxiliary voltage 16 (see FIGS. 3A and 3B) to the contactor coil,
- It has a display 48 for its own operating status, it has a digital input 44 for the connection of a floating switch contact, and
- circuit break 45 for the actuator.
- Such a circuit interruption 45 can be used for example for the electrical locking of a reversing starter.
- the application bus 10 is operated via the previously mentioned multi-core - here six-core - ribbon cable 8 (see FIGS. 3A and 3B).
- the line 8 is - starting from the gateway 20 - plugged or guided bus subscribers to bus participants via connector.
- two sockets 41, 42 are formed in the plug-in module 40 for inserting the ribbon cable 8 on the bus input side and on the bus output side. Because of the linear arrangement of subscribers, the last bus subscriber Nn has on the output side no inserted ribbon cable 8 as a connection line; its output side (socket 42) remains 'empty'.
- Each bus user has a status indicator 28, 48, 58 to indicate the status of the device, preferably optically, as an LED.
- the plug-in module 40 and the power module 50 of each bus node Nx has a two-terminal block 44, 45, 54, 55 in order to connect there a potential-free contact, z. B. for an auxiliary switch to query the motor protection switch position.
- FIG. 5 further details of the system are shown.
- N1 which is exemplified here as a motor protection switch-contactor combination
- three lines L1, L2, L3 of the network connection and the load M are shown.
- N1, N2, N3 to Nn bus participants a motor protection switch is shown and in the lower half plugged onto a contactor plug-in module 40 with its sockets 41, 42 and the mechanical display 48 for the contact position of the contactor.
- the representation according to FIG. 5 can be understood as an application bus 10 with n subscribers into which the power module 50 shown in FIG. 5 can optionally be inserted.
- a more detailed explanation of the power module 50 follows below.
- Fig. 2A- a flow chart for the representation of a system test and in Fig. 2B a flow chart for the adoption of a new target configuration is shown. The flowcharts of the two figures merge.
- the gateway checks whether a subscriber can be reached on the bus. If this question is answered with "yes”, the following question is asked as to whether the participant is expected at the gateway: If this question can also be answered with "yes”, the participant is configured in a further step by the gateway. Subsequently, the gateway selects the next participant via the configured participant. The gateway then checks again whether a subscriber can be reached on the bus and the polling loop is closed.
- each individual subscriber is queried by the gateway and the possibly existing parameters are saved in the gateway. It is also checked whether the maximum permissible number of nodes on the application bus has not been exceeded. If this is the case, the gateway reverts to the error status because the setpoint is not equal to the actual configuration. If this is not the case, the subscriber data are read out and saved in the gateway. The gateway selects the next participant via the attained participants and also checks for this whether availability is available. If all participants have been detected, the gateway and the subscribers enter the normal operating state in which the control data or status data is exchanged between the gateway and the subscribers. This configuration is remanently saved as a new target configuration in the gateway.
- FIGS. 3A, 3B show block diagrams of the bus control.
- FIG. 3A shows the gateway and a first bus subscriber N1 and FIG. 3B a power module 50 inserted between a second and a third bus subscriber N2, N3 and the second bus subscriber N2.
- the inputs for the open fieldbus 2 prlug connection or socket 23
- the power supply primary voltage 14 or LM, GND, auxiliary voltage 16 or U2
- LM the voltage supply 14 for the electronics in the gateway and the bus subscriber and U2 is understood to be the auxiliary voltage 16 for the subscriber application.
- the output (socket 22) of the gateway leads to the 6-wire ribbon cable.
- the power module (PM) 50 can optionally be interposed at any point in the linear row of bus subscribers (FIG. 3B). This is also indicated once again schematically in FIG. With the interposition of a Power module, the 'linear' power supply is interrupted by bus participants to bus subscribers. The data connection and the primary voltage 14 between the lying before the power module bus nodes N1, N2, N3 and lying behind the power module bus node Nn is looped through.
- a new supply for the bus participants following following in the bus row (group G) is realized, for this the power module is connected to a voltage supply 16 ', for example to 24 Volt DC.
- a voltage supply 16 ' for example to 24 Volt DC.
- This power supply can be, for example, a contactor supply for a group of bus subscribers who are to act as their own EMERGENCY STOP group.
- the power module has screw terminals or sockets 54, 55 for the power supply 16 '.
- the power module - like the other bus users - two sockets 51, 52, one of the input and the other is the output for the connector system.
- a status display 58 is provided on the power module, in particular for optical display via an LED, which indicates whether the supply voltage 16 'for the group G of the power module following bus subscriber is present.
- the networking is carried out with a single pluggable connection line.
- the connecting line 8 transmits on the one hand control data or status data and on the other hand the necessary energy for the switching devices.
- the use of the aforementioned power modules makes it possible to form groups of bus subscribers, thereby providing a separate power supply and
- grouping can be used to build a specific segment or circuit in which the switching devices have a separate emergency circuit.
- OFF group in which they can be monitored, switched on or off.
- the power modules are optional.
- a bright circle labeled 28 "and 48" represents a glowing LED, a black circle without another marking a non-glowing LED 28, 48, and a circle of garland labeled 28 'and 48' a flashing LED.
- the gateway 20 is the central element.
- the bus nodes N1 to Nx are supplied with energy by the gateway, controlled and monitored, and control and status data of all connected bus subscribers are transmitted to the higher-level fieldbus 2. It is firstly connected to the power supply 14 for its own electronics and secondly to the power supply 16, which supplies the bus subscribers.
- the auxiliary voltage 16 for bus users for example, voltage at the contactor coils
- the bus functionality for example, emergency stop system
- the bus users such as motor protection switch contactor combinations with plug-in modules, connected in order. If the Phmärwood 14 is turned on the first system, the gateway 20 checks the connected bus N1 to Nx on the application bus system, as already explained above to Figures 2A and 2B. In the initial situation, an arrangement without bus subscribers is provided as a target configuration. This is then updated after the integration of the individual bus users, as already described above.
- n bus users are wired at an output target configuration, ie, without bus subscribers.
- the gateway 20 initially expects no subscriber due to the desired configuration. Therefore, due to the configuration error, the gateway goes into the error state and this becomes optically at the gateway 20 by a blinking LED 28 '(upper right in the corner of the gateway 20 shown in Fig. 4A).
- the control LED on the first bus subscriber N1 which is connected via the connecting line 8 directly to the gateway, flashes (LED 48 ') also, as this was not expected by the gateway. All other status or control LEDs 48 of the other bus subscribers N2 to Nx do not light up, ie are switched off.
- the configuration button 27 is pressed on the gateway 20 to take over the connected bus users as the desired configuration. Now, it is checked by the gateway in sequence via the application bus 10, how many
- Bus subscribers (N1 to Nx) are connected to the application bus 10.
- the bus subscribers are numbered consecutively.
- Each individual bus subscriber stores the specific identification number in a non-volatile manner, i. the specific identification number is available again when switching on again after a switch-off and is not lost by the switch-off.
- the gateway all identification numbers are also saved in a non-volatile memory. After this process all connected bus participants are configured. LED 28 "on the gateway and LEDs 48" on the bus participants are all switched on statically and light up.
- FIG. 4B also corresponds to the situation in which the system in front of the gateway is electrically switched off with respect to the primary voltage 14 and is switched on again. After switching on, the gateway checks in sequence all connected bus stations and compares these step by step with the internally stored setpoint configuration. In the situation described, the setpoint configuration agrees with the connected subscriber configuration (actual configuration) - because unchanged. This keeps the system operational.
- the individual bus users can now be controlled and monitored via the bus controller of the higher-level open fieldbus 2. If the structure of the connected devices changes, for example, by extending or removing devices, this is detected by the gateway on the basis of the deviating nominal-actual configuration and displayed by the status LED 28.
- Fig. 4C shows an example with an existing configuration of a gateway 20 and n bus users N1 to Nn, which is ready to operate after configuration. If this structure is supplemented by one or more bus subscribers (Nin), then the following picture results after switching on.
- the gateway status LED 28 'flashes because the previous target configuration (n bus user) deviates from the actual configuration (n + 1 bus user).
- the LED 48 'of the first added (even if several inserted) bus node Nin flashes because he or she was not expected by the gateway / n.
- the user can thus very easily recognize from the flashing LEDs where the actual configuration deviates.
- the new configuration is automatically adopted by the gateway. After expiration of the automatic bus configuration, the same situation would now be given for n + x bus subscribers, as illustrated for n bus subscribers in FIG. 4B.
- FIG. 5 shows the use of at least one power module 50 to form a group G of bus subscribers.
- the power module lying behind the power module bus participants here plug-in module on motor protection switch contactor combination, cut off from the auxiliary power supply 16 for the subscriber application and there is a new supply of auxiliary voltage 16 'for the latter.
- the application bus 10 is looped through in terms of data technology and with respect to the primary voltage supply 14 for the electronics of the bus subscribers 1: 1 in the power module.
- the auxiliary voltage 16 'fed into the power module is switched off, the bus subscribers, e.g. Sagittarius, voltage-free behind the power module.
- Bus subscribers continue to be supplied and can therefore continue to receive the current actuator status, e.g. Contact status of the motor starter, transmitted to the gateway.
- the current actuator status e.g. Contact status of the motor starter
- the use of the power modules has the advantage that independent groups of motor-protective switch-contactor combination can be formed, for example an emergency-stop circuit, which can be switched off separately.
- the use of power modules can be done anywhere in the connector system. There may also be several Power Modules in the Connection plug-in system are installed so that several independent groups are formed by bus participants.
- connection line eg, ⁇ -core ribbon cable
- N1 to Nn-x bus participants (actuator, motor starter, circuit breaker)
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Abstract
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Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US20150149670A1 (en) | 2015-05-28 |
JP2010532603A (ja) | 2010-10-07 |
US10599604B2 (en) | 2020-03-24 |
US20160026595A1 (en) | 2016-01-28 |
JP5431314B2 (ja) | 2014-03-05 |
CA2691731C (en) | 2016-09-13 |
CN101690019B (zh) | 2014-01-08 |
US8935435B2 (en) | 2015-01-13 |
WO2009006916A1 (de) | 2009-01-15 |
US20110119507A1 (en) | 2011-05-19 |
CN101690019A (zh) | 2010-03-31 |
CA2691731A1 (en) | 2009-01-15 |
US11182327B2 (en) | 2021-11-23 |
US9164934B2 (en) | 2015-10-20 |
US20200183873A1 (en) | 2020-06-11 |
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