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RE:Analog input current count is not getting properly S7-1200PLC, Module SM1231

Created by: Govind_E&I at: 6/5/2014 7:55 AM (3 Replies)

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6/5/2014 7:55 AM	Rate (0)
Govind_E&I Regular Member Joined: 6/5/2014 Last visit: 2/22/2022 Posts: 2 Rating: (0)	Dear sir, We are using PLC S7-1200, AI Module SM123, we can read voltage count properly, but current 4-20mA Count not varied from 4 to 20mA Thanks & Regards Govidarajan. N.

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6/5/2014 8:04 AM	Rate (0)
Marcjan Platinum Member Joined: 4/22/2010 Last visit: 12/9/2021 Posts: 5697 Rating: (698)	Hello, Please mention the partnumber of this module and the used sensor. Check wiring is done properly and settings are correct. Regards, Marcjan
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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6/5/2014 3:41 PM	Rate (0)
0_Einstein Diamond Expert Joined: 7/7/2010 Last visit: 7/7/2022 Posts: 12428 Rating: (2012)	Govind_E&I Dear sir, We are using PLC S7-1200, AI Module SM123, we can read voltage count properly, but current 4-20mA Count not varied from 4 to 20mA Thanks & Regards Govidarajan. N. Your question is quite confusing since a voltage input does not support current readings, nor the other way around either. Are you saying you have: 1. Analog input - voltage 2. Analog input - current 3. PLC Hardware configuration set to voltage for voltage channel 4. PLC Hardware configuration set to current for 4-20mA channel 5. Downloaded the hardware configuration to your plc 6. And after all that, it is not working?
	science guy
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6/5/2014 4:51 PM	Rate (0)
LarryAm Silver Member Joined: 9/19/2011 Last visit: 7/6/2022 Posts: 130 Rating: (32)	Is the module set to "current" in the Device configuration window underPropertiesin TIA? See attached file for correct wiring information. Attachment C:\2-wire and 3-wire connections.pdf (98 Downloads)

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