Hi!!

Maybe the information contained in this section of the manual can help you.

-SIMATIC S7-300 S7-300 Module data. 

https://support.industry.siemens.com/cs/ww/en/view/8859629/49779218059

Br!

ElSayed99

i have a 313c-2dp PLC
and i'm trying to figure the wirings out, i tried to look in the data sheet and it dosen't show if the inputs and outputs are sinking or sourcing (or it's there and i can't see it)
could someone help me out ?

Please check article number of signal module. It will help you to identify if it is sink or source or sink/source type. e.g. check below.

6ES7321-1BP00-0AA0  sink/source type.

6ES7321-1BL00-0AA0  standard module

6ES7321-1BH50-0AA0  source input type.