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Good question, Mahmoud. From the loop controller’s perspective, all monitored channels must be healthy to clear the alarms. The fault could be in the BN‑307 or in a sounder on its loop, so check loop connectivity. If the loop is open the fault is likely a sounder, if the loop is intact, suspect...

Dear Avinash, Please check whether you’ve already configured the ET200SP in Hardware Config in TIA Portal. On the Hardware Config page there are settings for the white and grey potential terminals that are worth checking. Hope that helps.

Dear Mahmoud, The BN‑180 sits between the loop controller (BSD310) and the detection loop, giving the controller access to the loop. The BN‑300 input unit interfaces signal devices to the detection loop. With the BN‑300, the loop controller can detect loop faults. The loop controller also...

Dear Najmaldeen, It will be much easier to build this simple speed‑control program using the resources on the Siemens S7‑200 and Danfoss FC51 product support pages. Start with the Siemens S7‑200 product support article below, the S7‑200 programming manual chapter 12 that shows PLC logic you...

Hello, The software license USB dongles are locked to the serial number of the original installation. The license will only work with the original installation information and the matching dongle. If you’re running TOOLBOXST V04.07 on Windows 11 without the dongle, it won’t work. You may be...