Analog inputs in Simatic s7 300 PLC

[vikasvs]

Dear All Please help me and give me a solution. I have a siemens plc 6ES7 131 5BF03 0AB0 ( Simatic S7 300 CPU 313C) ( with four in built analog inputs ) we have to connect three analog input ( 0-10 vdc) from a typical transducer. and compare the value of the analog input with a reference value please help me to get the programme part of this 1. where i will find the analog voltage given to it (in programme software ) 2. how to compare the analog input if you have example programme to share with me its great. I will be greatful for your reply regards and thanks vikas

[malc cope]

Hi Dont know if the example attached is what you require, but basically it works well for me, it gives you ability to scale the analog from a raw value to engineering values, also lets you set low and high limits on the scaled analog with debounce times, the scaled analog can be used for comparison as shown in example. Hope is of use, any queries just ask. Malc analogs.zip