Siemens Simatic S7-1500 CPU 1512C-1 PN - Page 95

Wiring
4.3 Terminal and block diagrams
CPU 1512C-1 PN (6ES7512-1CK01-0AB0)
Manual, 12/2017, A5E40898741-AA
95
The figure below shows the current flow with correct wiring.
Figure 4-15 Current flow with correct wiring using the digital on-board I/O X11 as an example
With correct wiring, the supply current flows from the power supply 2L+ via terminal 29 to the
module. In the module, the current flows via the output driver and exits the module via
terminal 40.