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connect 5 weighing indicator with PLC S7-200

7/12/2014 3:39 PM	Rate (0)
Marsus Posts: 53 Rating: (1)	mirip Hello Siwarexi, I said that the indicator is required because, if the automatic stop, you can continue manually (manual dosing of ingredients) and thus does not stop the production. Further, in a concrete mixing plant, the accuracy of the weight is not important. Dear Mirip, I need to connect 5 weighing indicator with PLC. So, which analog input module will be perfect for me. I need 4-20mamp input. Please suggest me the part number.
Marsus Posts: 53 Rating: (1)	Last edited by: Narrator1 at: 7/15/2014 11:43 PM Topic split from /tf/WW/en/Posts/111174#top
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This contribution was helpful to 1 thankful Users mlthenuwara

7/12/2014 6:46 PM	Rate (0)
mirip Posts: 218 Rating: (9)	hello, if s7-200, I suggest EM231 --> 6ES7231-0HF22-0XA0.
mirip Posts: 218 Rating: (9)
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7/12/2014 7:05 PM	Rate (0)
Marsus Posts: 53 Rating: (1)	mirip hello, if s7-200, I suggest EM231 --> 6ES7231-0HF22-0XA0. As far I know only two port is for 4-20mamp range and rest 8 port are 0-10V. So, with these I can connect only two weigting indicator, As my weigin indicator is current output not voltage output.
Marsus Posts: 53 Rating: (1)
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7/13/2014 12:53 PM	Rate (0)
kriipc Silver Member Joined: 4/11/2011 Last visit: 7/11/2025 Posts: 132 Rating: (7)	6ES7231-0HC22-0XA0 has 4 inputs. But - inputs are 12 bit so max accuracy is 1 / 4096 of full scale - PLC inputs are 0..20 mA , your module outputs are 4..20 mA You can use those inputs, but you will loose 20% of accuracy -> now your accuracy is 1 / 3276 of full scale e.g. 1kg at 3 ton of full scale.
	I'm just a human. Mistakes are allowed. Sorry for my english. Only 3 months of training and manuals :)
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5/7/2020 12:23 AM	Rate (0)
mlthenuwara Posts: 2 Rating: (0)	Did you finish your project Rmc plant
mlthenuwara Posts: 2 Rating: (0)
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