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Making Connections to Analog Input to SM43JR20

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     I am learning to work with SM43JR20. In the spec sheet, for a 2 wire current transmitter to  be connected to analog input it is shown that from the positive terminal of the supply connection should be made to the current transmitter and the negative terminal of the transmitter should be connected to AN0/AN1. But my doubt is the path is not complete, right? Then how is it going to measure the current?

Can you guys suggest some current transmitters that I can use with this PLC model ? Also if those current transmitters can be coupled with thermo couples then it would be great .


Thanks in advance



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