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warehouse temperature monitoring

Created by: Pawmat at: 12/29/2020 11:45 PM (25 Replies)

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12/29/2020 11:45 PM	Rate (0)
Pawmat Regular Member Joined: 1/6/2019 Last visit: 12/6/2022 Posts: 21 Rating: (0)	I have a LOGO 6ED1052-1MD08-OBAO and looking for a solution to: 1. use two analog input for simple 0-10V temperature measurement (range temp. is between 0-10C in two separated storehouse chambers) 2. use webserver 3. data loggers - record temperature as register

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12/30/2020 2:42 AM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/17/2025 Posts: 35966 Rating: (4502)	Which webserver? The LOGO!8.2 that you have has two web servers. One is a simple that only can show you programmed message texts of the LOGO! and you can use virtually the the cursor key. The other is the extented web server which shows you self constructed web pages. For this you need a mSD card in the LOGO!. Also for the data logging you need a mSD card.

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12/30/2020 7:32 AM	Rate (0)
Pawmat Regular Member Joined: 1/6/2019 Last visit: 12/6/2022 Posts: 21 Rating: (0)	this option: web server with constructed web and mSD card for data logging. additionally, the program could have a one alarm state (store temp so high - eg. 8C)

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12/30/2020 7:34 AM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/17/2025 Posts: 35966 Rating: (4502)	What do you expect now? Help? Finished program? Do you already have an approach to a program?

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12/30/2020 7:41 AM	Rate (0)
Pawmat Regular Member Joined: 1/6/2019 Last visit: 12/6/2022 Posts: 21 Rating: (0)	a program if possible would be very helpful

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12/30/2020 7:46 AM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/17/2025 Posts: 35966 Rating: (4502)	Then you should define more precisely what you want. Do you just want to process the two temperatures? Do you want an alarm for the two temperatures? If so, how should it be acknowledged? Automatically? Via digital input? Via a button from the web server? Which LSC version do you have? Do you have the program LWE V1.1.0?

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12/30/2020 7:59 AM	Rate (0)
Pawmat Regular Member Joined: 1/6/2019 Last visit: 12/6/2022 Posts: 21 Rating: (0)	LSC 8.3, LWE 1.1.0 to monitor tow temperatures (for two separate cold store rooms) alarm for two temperatures via button from web server - (cold store room temp. range 0-10C alarm when higher than 8C)

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12/30/2020 11:09 AM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/17/2025 Posts: 35966 Rating: (4502)	Here a possible solution. Attachment Warehouse temperature control.zip (684 Downloads)

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This contribution was helpful to 1 thankful Users Pawmat

2/1/2021 6:19 PM	Rate (0)
Pawmat Regular Member Joined: 1/6/2019 Last visit: 12/6/2022 Posts: 21 Rating: (0)	a cannot adjust analog amplifier settings : sensor: 0-10V0-1000 range , gain 1offset 0 in work mode I have : f.e. - 4,6Vfrom analog input at 20Cso it show 460in range 1-1000 but after amplifier 4,6 C 0-10V transmitter range -50 - +100C function should bey=15x-50

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2/1/2021 6:27 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/17/2025 Posts: 35966 Rating: (4502)	Pawmat in work mode I have : f.e. - 4,6Vfrom analog input at 20Cso it show 460in range 1-1000 but after amplifier 4,6 C 0-10V transmitter range -50 - +100C function should bey=15x-50 Sensor type: 0-10V Minimum: -500 Maximum: 1000 Gain: 1.5 Offset: -500 Decimal places: 1 Then show it in the LOGO! display -50.0 to 100.0 °C. For example: 4,6V at 0-10V input: 1500 / 10 * 4,6 = 690 690 - 500 (offset) = 190 190 units = 19.0 °C
	Last edited by: ixo65 at: 02/01/2021 18:34:48
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This contribution was helpful to 1 thankful Users Otobit

2/1/2021 7:47 PM	Rate (0)
Pawmat Regular Member Joined: 1/6/2019 Last visit: 12/6/2022 Posts: 21 Rating: (0)	doesn't work - attached screens Attachment 1 (optimized).pdf (395 Downloads)

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2/1/2021 7:50 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/17/2025 Posts: 35966 Rating: (4502)	Please can you upload the LOGO! program und the LWE project as a zipfile?

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2/1/2021 8:01 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/17/2025 Posts: 35966 Rating: (4502)	What you make is not correct ... The Integer value is -500 to 1000 for one decimal place. You make a bar graph with two decimal places. The value that the cursor shows is 1.89 while you make two decimal place. Make by the bar graph only one decimal place, then ist value 18.9.

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This contribution was helpful to 1 thankful Users Pawmat

2/1/2021 8:16 PM	Rate (0)
Pawmat Regular Member Joined: 1/6/2019 Last visit: 12/6/2022 Posts: 21 Rating: (0)	project Attachment Warehouse temperature control.zip (362 Downloads)

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2/1/2021 8:24 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/17/2025 Posts: 35966 Rating: (4502)	As I wrote, you make in LWE two decimal places. Also wrong two decimal places in the setpoint input fields.

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This contribution was helpful to 1 thankful Users Pawmat

2/4/2021 6:01 PM	Rate (0)
Pawmat Regular Member Joined: 1/6/2019 Last visit: 12/6/2022 Posts: 21 Rating: (0)	one more topic - how to setup project to have after import data log from LOGO to PC that I would have column with temperature values show as 8,0 degrees ......

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2/4/2021 6:06 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/17/2025 Posts: 35966 Rating: (4502)	This is not possible. The data log only records raw values (integers), e.g. 80 at 8.0 ° C.

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2/4/2021 6:20 PM	Rate (0)
Pawmat Regular Member Joined: 1/6/2019 Last visit: 12/6/2022 Posts: 21 Rating: (0)	but in analog amplifier with PT100 is unit and resolution

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2/4/2021 6:23 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/17/2025 Posts: 35966 Rating: (4502)	No, what you mean is a decimal place only for the LOGO! display.

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2/4/2021 6:27 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/17/2025 Posts: 35966 Rating: (4502)	It's the as you send the value to the webserver. If you have not set one decimal in place in LWE, then show you the webserver 80 instead of 8,0.

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This contribution was helpful to 1 thankful Users Pawmat

3/23/2021 5:43 PM	Rate (0)
Pawmat Regular Member Joined: 1/6/2019 Last visit: 12/6/2022 Posts: 21 Rating: (0)	could you advise - temperature on in LWE bar is unstable +/- 1 C in warehouse is stable. Should I use analog filter?

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3/23/2021 5:55 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/17/2025 Posts: 35966 Rating: (4502)	How have you scaled the temperature? With one decimal place or without decimalplace? A analog filter or a average block make the value more stable.

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3/23/2021 6:11 PM	Rate (0)
Pawmat Regular Member Joined: 1/6/2019 Last visit: 12/6/2022 Posts: 21 Rating: (0)	with one decimal place

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3/23/2021 6:19 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/17/2025 Posts: 35966 Rating: (4502)	Use a analog filter or a average block.

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3/23/2021 6:25 PM	Rate (0)
Pawmat Regular Member Joined: 1/6/2019 Last visit: 12/6/2022 Posts: 21 Rating: (0)	how to set up an average block at start: sampling time and number of samples?

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3/23/2021 6:33 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 9/17/2025 Posts: 35966 Rating: (4502)	It doesn't matter how you approach it, you have to assess it yourself or try it out. When the LOGO! starts, however, you have the minimum value of the temperature for the time of the first sampling process.

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This contribution was helpful to 1 thankful Users Pawmat

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