# Honeywell
**URL:** https://forumautomation.com/c/plc-programmable-logic-controllers/honeywell/22.md
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## [About the Honeywell category](https://forumautomation.com/t/about-the-honeywell-category/27)
**Author:** [@jacobmani](https://forumautomation.com/u/jacobmani)\
**Replies:** 0
Honeywell invents and manufactures technologies to address some of the world’s toughest challenges initiated by revolutionary macrotrends in science, technology and society.
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## [Which PLC uses PROFIBUS?](https://forumautomation.com/t/which-plc-uses-profibus/14576)
**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\
**Replies:** 1\
**Last updated:** [November 6, 2026, 6:10am UTC](https://forumautomation.com/t/which-plc-uses-profibus/14576 "2026-11-06T06:10:46Z")
Which PLC uses PROFIBUS?
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## [CONTROL EDGE R150 firmware is available? Anyone clear me, How i will do simulation is this PLC?](https://forumautomation.com/t/control-edge-r150-firmware-is-available-anyone-clear-me-how-i-will-do-simulation-is-this-plc/4607)
**Author:** [@PARDEEPKALAS](https://forumautomation.com/u/PARDEEPKALAS)\
**Replies:** 0\
**Last updated:** [September 10, 2018, 11:29am UTC](https://forumautomation.com/t/control-edge-r150-firmware-is-available-anyone-clear-me-how-i-will-do-simulation-is-this-plc/4607 "2018-09-10T11:29:00Z")
CONTROL EDGE R150 firmware is available? one one clear me, How i will do simulation is this PLC?
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## [2 out of 3(2oo3) PLC logic](https://forumautomation.com/t/2-out-of-3-2oo3-plc-logic/439)
**Author:** [@instrumen](https://forumautomation.com/u/instrumen)\
**Replies:** 0\
**Last updated:** [June 5, 2015, 6:22pm UTC](https://forumautomation.com/t/2-out-of-3-2oo3-plc-logic/439 "2015-06-05T18:22:37Z")
2 out of 3(2oo3) PLC logic. A, B & C are inputs D is the output
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## [When using a temporary Connect to the Honeywell SM(Safety Manager), the QPP only receives it system number](https://forumautomation.com/t/when-using-a-temporary-connect-to-the-honeywell-sm-safety-manager-the-qpp-only-receives-it-system-number/334)
**Author:** [@instrumen](https://forumautomation.com/u/instrumen)\
**Replies:** 0\
**Last updated:** [March 20, 2015, 10:35am UTC](https://forumautomation.com/t/when-using-a-temporary-connect-to-the-honeywell-sm-safety-manager-the-qpp-only-receives-it-system-number/334 "2015-03-20T10:35:12Z")
If you can start the temporary download and the system number is received by the QPP, the wiring must be correct. Most likely there is another program installed on your PC that interferes with the download. Applications…
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## [What is the MTBF for the Logic Managert(LM)/IPC power supplies?](https://forumautomation.com/t/what-is-the-mtbf-for-the-logic-managert-lm-ipc-power-supplies/323)
**Author:** [@instrumen](https://forumautomation.com/u/instrumen)\
**Replies:** 0\
**Last updated:** [March 20, 2015, 9:56am UTC](https://forumautomation.com/t/what-is-the-mtbf-for-the-logic-managert-lm-ipc-power-supplies/323 "2015-03-20T09:56:34Z")
620-0036 119000 hours (about 13.5 years); 621-9931 235000 hours (about 27 years) and 621-9934 330000 hours (about 37 years).
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## [Honeywell Safety PLC FSC (Fail Safe Controller) showing "spurious watchdog interrupt, memory error"](https://forumautomation.com/t/honeywell-safety-plc-fsc-fail-safe-controller-showing-spurious-watchdog-interrupt-memory-error/183)
**Author:** [@omega](https://forumautomation.com/u/omega)\
**Replies:** 1\
**Last updated:** [December 6, 2014, 4:57pm UTC](https://forumautomation.com/t/honeywell-safety-plc-fsc-fail-safe-controller-showing-spurious-watchdog-interrupt-memory-error/183 "2014-12-06T16:57:06Z")
In FSC(Fail Safe Controller) ,Extended diagnostics showing “spurious watchdog interrupt, memory error”.What is the issue?