7/7/2017 2:06 PM | |
Posts: 2 Rating: (0) |
Hi, I am using the SM331 1KF02-0AB0 AI module with 2 wire 4-20mA inputs but the value coming back is just 0. I have the first channel connected to a test resistor network to generate the 4-20mA signal but I have also tried connected to a sensor and still just reads 0. I can measure the input to the channel using a meter and that reads okay. The connections to the channels are as per page 359 of the S7-300 module data manual, all of the M- terminals are interconnected and connected to M. I am using the move command to move the input to memory just so that I can "watch" to see the value. The tag for the command is as per the tag for the channel in the configuration screen. I seems like there is something fundamental that I am missing, any tips would be much appreciated.
AttachmentConnection details.pdf (248 Downloads) |
7/10/2017 1:58 PM | |
Posts: 2 Rating: (0) |
Thanks, this seems to have solved my wee issue now getting readings that are not '0'. Much appreciated. |
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