SiePortal

The integrated platform for your product selection, buying and support workflow - bringing together Industry Mall and Online Support.

Products & Services
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
Support Support
{{(apiData.Support | filter:{'rank':1}:true)[0].title}} Support
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
MySiePortal MySiePortal
{{(apiData.MySiePortal | filter:{'rank':1}:true)[0].title}} MySiePortal
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
Cart ({{apiData.CartCount}})

Navigation

S7-1200 Analog Inputs

2/11/2010 8:54 AM	Rate (0)
geraldo Posts: 6 Rating: (0)	can anyone help me program a simple circuit? ihave a CO sensor measuring 0-100 ppm signal to plc 4-20ma. Iwant to energize an alarm at 20ppm and remove alarm at 15ppm.what instructions should i use and how do i scale
geraldo Posts: 6 Rating: (0)
Suggestion To thank Quote Answer

2/11/2010 10:11 AM	Rate (0)
Denilson Pegaia Diamond Expert Joined: 9/23/2005 Last visit: 12/30/2025 Posts: 4435 Rating: (1487)	Hi, you can use SCALE block (/tf/WW/en/Posts/31698#top) to read you analog input. After that you can use two Real comparations and a Flip Flop to create the alarm signal.
	Denilson Pegaia Siemens Industry Sector Technical Support
Suggestion To thank Quote Answer

2/11/2010 10:47 AM	Rate (0)
geraldo Posts: 6 Rating: (0)	thanks for the advice.my computer will not open your zip file.hmmm.my high level will just energize a relay for a strobe and also an output to a sonalert buzzer. the buzzer will be able to be silenced with a push button but the strobe will stay on untill the lower level is met.i dont understand how to create the analog logic.
geraldo Posts: 6 Rating: (0)
Suggestion To thank Quote Answer

Share this page:

Share this page on...