Configurable multiple channel discrete output module

• US 7,325,162 B2
• Filed: 02/12/2003
• Issued: 01/29/2008
• Est. Priority Date: 03/28/2002
• Status: Active Grant

• Current Assignee: Siemens AG
• Original Assignee: Siemens Energy & Automation Incorporated (Siemens AG)
• Inventors: Weddle, Alan, Mowry, Stephen Weeks Jr.
• Primary Examiner(s): Maskulinski; Michael C
• Application Number:
  US10/365,115
• Publication Number:
  US 20040078627A1
• Time in Patent Office: 1,812 Days
• Field of Search: 714/24, 700/19, 700/17, 700/80, 700/83, 700/79
• US Class Current: 714/24
• CPC Class Codes: G05B 19/054 Input/output
• CPC Class Codes: G05B 2219/1196 Intelligent, smart I-O can function independently, monitoring limit values
• CPC Class Codes: G05B 2219/14036 Detection of fault in processor

Abstract

Certain exemplary embodiments of the present invention provide a control system device, comprising a multiple channel discrete output module, said module storing a plurality of fail-state parameters, each fail-state parameter from the plurality of fail-state parameters corresponding to one channel of the multiple channels. Certain exemplary embodiments of the present invention provide a method for controlling the operation of each of a plurality of channels coupled to a discrete output module upon failure or shutdown of a control system coupled to the discrete output module, comprising, for each of the plurality of channels, storing a predetermined value for a fail-state parameter in a multi-channel discrete output module adapted to control the channel; and upon detecting a control system failure or shutdown, causing the channel to operate in a mode corresponding to the stored value for the channel'"'"'s fail-state parameter. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. This abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Claims

1. A control system device, comprising:

a multiple channel discrete output module, said module storing a plurality of fail-state parameters, each fail-state parameter from the plurality of fail-state parameters corresponding to one channel of the multiple channel output module, said module adapted to be communicatively coupled to a programmable logic controller (PLC), the PLC adapted to detect a fault condition, the PLC adapted to check for an error handler responsive to the detected fault condition, the error handler adapted to attempt a recovery from the fault condition without halting execution of a program by the PLC, the PLC adapted to enter a stop state if the error handler does not provide the recovery from the fault condition, the module adapted to receive a command from the PLC responsive to the stop state, the command adapted to cause at least one fail-state parameter of the plurality of fail state parameters to be provided to a channel of said module; and

a plurality of indicators, each indicator corresponding to a single channel, each indicator adapted to communicate a short-circuit status of its corresponding channel to a control system coupled to said control system device, said multiple channel output module adapted to detect an error in a signal on at least one channel of said multiple channel output module, said multiple channel output module adapted to correct the error in the signal.

2. The control system device of claim 1, further comprising a memory containing said plurality of fail-state parameters.

3. The control system device of claim 1, further comprising a second plurality of indicators, each indicator corresponding to a single channel, each indicator adapted to indicate a status of its corresponding channel.

4. The control system device of claim 1, further comprising a second plurality of indicators, each indicator corresponding to a single channel, each indicator adapted to visually indicate a status of its corresponding channel.

5. The control system device of claim 1, further comprising a second plurality of indicators, each indicator corresponding to a singe channel, each indicator adapted to audibly indicate a status of its corresponding channel.

6. The control system device of claim 1, further comprising a second plurality of indicators, each indicator corresponding to a singe channel, each indicator adapted to communicate a status of its corresponding channel to said control system coupled to said control system device.

7. The control system device of claim 1, further comprising a second plurality of indicators, each indicator corresponding to a single channel, each indicator adapted to communicate an open-circuit status of its corresponding channel to said control system coupled to said control system device.

8. The control system device of claim 1, further comprising a detector adapted to detect a shutdown of said control system coupled to said control system device and to direct each channel to enter its programmed fail-state.

9. The control system device of claim 1, further comprising a detector adapted to detect a shutdown of said control system coupled to said control system device.

10. The control system device of claim 1, further comprising a detector adapted to detect a failure of said control system coupled to said control system device.

11. The control system device of claim 1, further comprising a detector adapted to detect a failure of a signal from said control system coupled to said control system device.

12. The control system device of claim 1, further comprising a detector adapted to send an acknowledgment signal in response to receiving a signal from said control system coupled to said control system device.

13. The control system device of claim 1, further comprising a detector adapted to acknowledge a signal from said control system coupled via the Internet to said control system device.

14. The control system device of claim 1, further comprising a detector adapted to process a signal from said control system optically coupled to said control system device.

15. The control system device of claim 1, wherein said control system device comprises a relay.

16. The control system device of claim 1, wherein said control system device comprises an SCR.

17. The control system device of claim 1, wherein said control system device comprises an FET.

18. The control system device of claim 1, wherein said control system device controls a supply of alternating current to a circuit.

19. The control system device of claim 1, wherein said control system device controls a supply of direct current to a circuit.

20. The control system device of claim 1, wherein said control system device controls an upper AC supply voltage of about 20 volts to about 240 volts.

21. The control system device of claim 1, wherein said control system device controls an upper DC supply voltage of about 20 volts to about 240 volts.

22. The control system device of claim 1, wherein, responsive to said stop state, said module is adapted to set all outputs to a zero voltage.

23. The control system device of claim 1, wherein said module is adapted to determine that a communication failure with the PLC has occurred.

24. The control system device of claim 1, wherein said module is adapted to determine tat the PLC has shut down.

25. A control system device, comprising a multi-channel discrete output module, wherein a fail-state of each channel is independently configurable within said module, said output module adapted to receive instructions from said control system device, said module adapted to be communicatively coupled to a programmable logic controller (PLC), the PLC adapted to detect a fault condition, the PLC adapted to check for an error handler responsive to the detected fault condition, the error handler adapted to attempt a recovery from the fault condition without halting execution of a program by the PLC, the PLC adapted to enter a stop state if the error handler does not provide the recovery from the fault condition, the module adapted to receive a command from the PLC responsive to the stop state, the command adapted to cause at least one fail-state parameter of the plurality of fail state parameters to be provided to a channel of said module, said control system device said output module further adapted to communicate short-circuit status information to a plurality of indicators, each indicator corresponding to a single channel, each indicator adapted to communicate a short-circuit status of its corresponding channel to a control system coupled to said control system device, said multi-channel discrete output module adapted to detect an error in a signal on at least one channel of said multi-channel discrete output module, said multi-channel discrete output module adapted to correct the error in the signal.

26. The control system device of claim 25, wherein said multi-channel discrete output module is adapted to be controlled by the programmable logic controller.

27. The control system device of claim 25, wherein said multi-channel discrete output module is adapted to be coupled to the programmable logic controller.

28. The control system device of claim 25, wherein said multi-channel discrete output module is adapted to control outputs of the programmable logic control system.

29. A programmable fail-state multi-channel discrete output module for a control system, comprising a memory containing a plurality of single-channel-dedicated fail-state parameter values, said output module adapted to receive instructions from a control system device, said module adapted to be communicatively coupled to a programmable logic controller (PLC), the PLC adapted to detect a fault condition, the PLC adapted to check for an error handler responsive to the detected fault condition, the error handler adapted to attempt a recovery from the fault condition without halting execution of a program by the PLC, the PLC adapted to enter a stop state if the error handler does not provide the recovery from the fault condition, the module adapted to receive a command from the PLC responsive to the stop state, the command adapted to cause at least on fail-state parameter of the plurality of fail state parameters to be provided to a channel of said module, said output module further adapted to communicate short-circuit status information to a plurality of indicators, each indicator corresponding to a single channel, each indicator adapted to communicate a short-circuit status of its corresponding channel to said control system, said control system coupled to said control system device, said multi-channel discrete output module adapted to detect an error in a signal on at least one channel of said multi-channel discrete output module, said multi-channel discrete output module adapted to correct the error in the signal.