saving real values in DB in step7

[tajammal]

i want to store data values (real values) from analogue inputs in step7 using Data block.(hardware s7-300). also how can i monitor these stored values(online)

 

[Binaural]

You can just open the data block up and click "online", or watch where in the program the data is converted from a raw digital word into a scaled floating point value. Or was this question regarding HMI options? Better questions get better answers, so be as specific and detailed as you can.

 

[buck2825]

the real values (electrical signal) get processed into digital in the IO card A to D converter. this value is stored in a PIW address to read this value you can use a VAT table or move the value to a DB ether just move the value or scale the value into something usable and store it in a DB ether way you can then watch the value in the DB as well or reference the DB address in your VAT table. FYI analog signals are +27648 to -27648. this allows for a little over range in your process