What is claimed is:
1. A machine installation having an electrical machine, a control unit and a power supply for the machine, a tripping element for generating a control signal having at least a first and a second signal state, and a safety switching device for safely disconnecting the electrical machine as a function of the control signal, said safety switching device comprising:
an input for receiving the control signal,
an output for providing a reporting signal which is supplied to the control unit,
a failsafe disconnection unit for fail-safely disconnecting the machine from the power supply, and
a non-failsafe signaling unit,
wherein the disconnection unit and the signaling unit are jointly supplied with the control signal,
wherein the signaling unit is configured to produce the reporting signal in a non-failsafe manner as a function of the first and second signal state, and
wherein the disconnection unit has a first delay element, by means of which the process of disconnecting is delayed by a first time interval.
2. The machine installation of claim 1, wherein the control signal includes an operating voltage for the switching device, with one of the first and second signal states corresponding to absence of the operating voltage.
3. The machine installation of claim 1, wherein one of the first and second signal states corresponds to operating the tripping element.
4. The machine installation of claim 1, wherein the signaling unit has a second delay element, by means of which the production of the reporting signal is delayed by a second time interval when the switching device is switched on.
5. The machine installation of claim 1, wherein the disconnection unit has at least two mutually redundant switches which are arranged in series with one another.
6. The machine installation of claim 5, wherein the safety switching device further comprises a monitoring circuit, and wherein the switches have at least one positively-guided auxiliary contact, which is embedded in the monitoring circuit.
7. The machine installation of claim 1, wherein the disconnection unit and the signaling unit are arranged in a common switching device enclosure.
8. A safety switching device for safely disconnecting an electrically driven machine, said switching device comprising a failsafe disconnection unit and a non-failsafe signaling unit, both of which being configured to be jointly supplied with an external control signal having at least one defined signal state, and comprising an output for providing an external reporting signal, wherein the disconnection unit is adapted to disconnect the electrically driven machine in a failsafe manner as a function of the defined signal state, wherein the disconnection unit has a first delay element, by means of which the process of disconnecting is delayed by a first time interval starting from the defined signal state, and wherein the signaling unit is adapted to produce the external reporting signal at the output in a non-failsafe manner as a function of the defined signal state.
9. The safety switching device of claim 8, wherein the signaling unit is adapted to deactivate the reporting signal without any delay when the defined signal state occurs.
10. The safety switching device of claim 8, wherein the control signal includes an operating voltage for the switching device, and wherein the defined signal state corresponds to absence of the operating voltage.
11. The safety switching device of claim 8, wherein the control signal includes an output signal from a tripping element, and wherein the defined signal state corresponds to operating the tripping element.
12. The safety switching device of claim 8, wherein the signaling unit has a second delay element, by means of which the production of the reporting signal is delayed by a second time interval when the switching device is switched on.
13. The safety switching device of claim 8, wherein the disconnection unit has at least two mutually redundant switching elements which are arranged in series with one another.
14. The safety switching device of claim 13, further comprising a monitoring circuit, wherein the switching elements have at least one positively-guided auxiliary contact, which is included in the monitoring circuit.
15. The safety switching device of claim 8, wherein the disconnection unit and the signaling unit are arranged in a common switching device enclosure.
16. A safety switching device for safely switching off an electrical load, said device having an input for receiving a control signal, a failsafe disconnection unit and a signaling unit, both units being configured to be jointly supplied with the control signal, wherein the disconnection unit is adapted to switch off the electrical load in a failsafe manner as a function of the control signal, wherein the signaling unit is configured to produce an external reporting signal as a function of the control signal, wherein the disconnection unit has a first delay element, by means of which the process of switching off the load is delayed by a first time interval, and wherein the signaling unit is a non-failsafe unit which produces the reporting signal in a non-failsafe manner.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for installing software components, comprising:
receiving, by a terminal, a download address of a software component package and a download instruction command from a Device Management (DM) server, wherein the software component package contains one or more software components;
if the terminal receives the download address and the download command, downloading, by the terminal, the software component package according to the download address; and
installing, by the terminal, the downloaded software component package locally and generating a management node corresponding to the software component and a subnode of the management node under a Deployed subtree of a Software Component Management Object (SCOMO),
wherein generating the management node corresponding to the software component and the subnode of the management node under the Deployed subtree of the SCOMO comprises: obtaining, by the terminal, an identifier (ID) of one software component and assigning, by the terminal, the ID to a value of an ID subnode of the management node corresponding to the software component under the Deployed subtree of the SCOMO, and wherein the ID of the software component is provided by a network and delivered to the terminal as a part of the software component package.
2. The method of claim 1, wherein after generating the management node corresponding to the software component and the subnode of the management node under the Deployed subtree of the SCOMO, the method further comprises: reporting, by the terminal, an installation response message to the DM server, and wherein the installation response message comprises a Uniform Resource Identifier (URI) of the management node generated under the Deployed subtree.
3. The method of claim 2, wherein the installation response message is reported in a synchronous mode or an asynchronous mode; and wherein if the synchronous reporting mode is applied, the URI in the installation response message is carried in an ITEM element of a STATUS command.
4. The method of claim 3, wherein the installation response message further comprises a name or an ID of the software component.
5. The method of claim 1, wherein if the download instruction command is downloaded after the terminal downloads the software component package according to the download address and before the software component package is installed locally, and the method further comprises:
generating, by the terminal, a management node corresponding to the software component package and a subnode of the management node under a Delivered subtree of the SCOMO; and
assigning access control rights to the management node and the subnode of the management node.
6. The method of claim 5, wherein before the DM server delivers the download instruction command, the method further comprises:
generating, by the terminal, a management node corresponding to the software component package under a Download subtree of the SCOMO; and wherein assigning the access control right to the management node under the Delivered subtree comprises:
assigning an access control right of the management node generated under the Download subtree to the management node generated under the Delivered subtree.
7. The method of claim 5, wherein assigning the access control right to the subnode of the management node under the Delivered subtree comprises at least one of: allowing the subnode of the management node generated under the Delivered subtree inherit the access control right of the management node, and assigning an access control right of an executable node under the Download subtree to an executable node under the management node generated under the Delivered subtree.
8. The method of claim 1, wherein if the download instruction command is an instruction to download and install the software component package, when the terminal downloads the software component package successfully but fails to install the software component package, the method further comprises: generating, by the terminal, a management node corresponding to the software component package and subnodes of the management node under a Delivered subtree of the SCOMO and assigning access control rights to the management node and the subnodes of the management node.
9. The method of claim 8, wherein before the DM server delivers the download instruction command, the method further comprises:
generating, by the terminal, a management node for the software component package under a Download subtree of the SCOMO; and wherein assigning access control rights to the management node under the Delivered subtree comprises: assigning an access control right of the management node generated under the Download subtree to the management node generated under the Delivered subtree.
10. The method of claim 8, wherein assigning the access control right to the subnode of the management node under the Delivered subtree comprises at least one of: allowing the subnode of the management node generated under the Delivered subtree to inherit the access control right of the management node, and assigning an access control right of an executable node under the Download subtree to an executable node under the management node generated under the Delivered subtree.
11. The method of claim 1, wherein if the download instruction command is to download and install the software package contents but to not activate the software package contents, when the terminal downloads the software component package successfully but fails to install the software component package, the method further comprises: generating, by the terminal, a management node corresponding to the software component package and subnodes of the management node under a Delivered subtree of the SCOMO and assigning access control rights to the management node and the subnodes of the management node.
12. The method of claim 11, wherein before the DM server delivers the download instruction command, the method further comprises:
generating, by the terminal, a management node for the software component package under a Download subtree of the SCOMO; and wherein assigning access control rights to the management node under the Delivered subtree comprises: assigning access control rights of the management node generated under the Download subtree to the management node generated under the Delivered subtree.
13. The method of claim 11, wherein assigning the access control right to the subnode of the management node under the Delivered subtree comprises at least one of: allowing the subnode of the management node generated under the Delivered subtree inherit the access control right of the management node, and assigning an access control right of an executable node under the Download subtree to an executable node under the management node generated under the Delivered subtree.
14. The method of claim 1, wherein after generating the management node corresponding to the software component and the subnode of the management node under the Deployed subtree of the SCOMO, the method further comprises: updating, by the terminal, a state value of the software component package recorded in the subnode when the state of the software component package changes.
15. A terminal, comprising:
a receiving unit configured to receive a download address of a software component package and a download instruction command instructing from a Device Management (DM) server, wherein the software component package contains one or more software components;
a downloading unit configured to download the software component package according to the download address if the terminal receives the download address and the command instructing to download;
an installing unit configured to install the downloaded software component package locally and generate a management node corresponding to the software component and a subnode of the management node under a Deployed subtree of a Software Component Management Object (SCOMO); and
wherein when generating the management node corresponding to the software component and the subnode of the management node under the Deployed subtree of the SCOMO, the installing unit is further configured to: obtaining an identifier (ID) of one software component and assign the ID to a value of an ID subnode of the management node corresponding to the software component under the Deployed subtree of the SCOMO, and wherein the ID of the software component is provided by a network and delivered to the terminal as a part of the software component package.
16. The terminal of claim 15, further comprising a reporting unit configured to report an installation response message to the DM server after the management node corresponding to the software components and the subnode of the management node are generated under the Deployed subtree of the SCOMO, wherein the installation response message comprises a Uniform Resource Identifier (URI) of the management node generated under the Deployed subtree.
17. The terminal of claim 16, wherein the installation response message is reported in a synchronous mode or an asynchronous mode; and wherein if the synchronous reporting mode is applied, the URI in the installation response message is carried in an ITEM element of a STATUS command
18. The terminal of claim 15, wherein if the download instruction command is to download the software component package, after the terminal downloads the software component package according to the download address and before the software component package is installed locally, a first generating unit of the terminal is configured to generate a management node and subnode of the management node corresponding to the software component under a Delivered subtree; and a first right assigning unit of the terminal is configured to assign access control rights to the management node and the subnode of the management node.
19. The terminal of claim 18, wherein before the DM server delivers the download instruction command, the receiving unit is further configured to generate a management node corresponding to the software component under the Download subtree of the SCOMO; and
the first right assigning unit is further configured to assign an access control right of the management node generated under the Download subtree to the management node generated under the Delivered subtree.
20. The terminal of claim 15, wherein if the download instruction command is to download and install the software component package, when the terminal downloads the software component package successfully but fails to install the software component package a first generating unit of the terminal is configured to generate a management node and subnode of the management node corresponding to the software component package under a Delivered subtree of the SCOMO; and a first right assigning unit of the terminal is configured to assign access control rights to the management node and the subnodes of the management node.
21. The terminal of claim 20, wherein before the DM server delivers the download instruction command, the receiving unit is further configured to generate a management node corresponding to the software component package under the Download subtree of the SCOMO; and
the first right assigning unit is further configured to assign an access control right of the management node generated under the Download subtree to the management node generated under the Delivered subtree.
22. The terminal of claim 15, wherein if the download instruction command is to download and install the software package contents but to not activate the software package contents, when the terminal downloads the software component package successfully but fails to install the software component package a first generating unit of the terminal is configured to generate a management node and subnode of the management node corresponding to the software component under a Delivered subtree of the SCOMO; and a first right assigning unit of the terminal is configured to assign access control rights to the management node and the subnodes of the management node.
23. The terminal of claim 22, wherein before the DM server delivers the download instruction command, the receiving unit is further configured to generate a management node corresponding to the software component package under the Download subtree of the SCOMO; and
the first right assigning unit is further configured to assign an access control right of the management node generated under the Download subtree to the management node generated under the Delivered subtree.
24. A system for installing software components, comprising:
a Device Management (DM) server configured to deliver a download address of a software component package and a download instruction command to a terminal, wherein the software component package contains one or more software components,
wherein the terminal is configured to receive the download address of the software component package and the download instruction command from the DM server, and if the download address and the download instruction command is received, download the software component package from the download address, install the downloaded software component package locally, and generate a management node corresponding to the software component and a subnode of the management node under a Deployed subtree of a Software Component Management Object (SCOMO); and
wherein when generating the management node corresponding to the software component and the subnode of the management nodes under a Deployed subtree of the SCOMO, the terminal is further configured to obtain an identifier (ID) of one software component and assign the ID to a value of an ID subnode of the management node corresponding to the software component under the Deployed subtree of the SCOMO, and wherein the ID of the software component is provided by a network and delivered to the terminal as a part of the software component package.
25. The system of claim 24, wherein the terminal is further configured to report an installation response message to the DM server after the management node corresponding to the software component and the subnode of the management node are generated under the Deployed subtree of the SCOMO, wherein the installation response message comprises an Uniform Resource Identifier (URI) of the management node generated under the Deployed subtree.