Stop Mode - Siemens SIMATIC S7-1500 System Manual

Example for the "Comparison preset to actual configuration" parameter
"Startup CPU only if compatible"
The DI 32x24VDC HF input module with 32 digital inputs can be a compatible replacement
for a DI 16x24VDC HF input module with 16 digital inputs. The pin assignment and all
electrical and functional properties are identical.
"Startup CPU even if mismatch"
Instead of a configured digital input module, you insert an analog output module or no
module is present in this slot and thus in all subsequent slots. Although the configured inputs
cannot be accessed, the CPU starts up.
Note that the user program cannot function correctly in this case and take the appropriate
measures.
10.5.2

STOP mode

Function
The CPU does not execute the user program in STOP mode.
All outputs are disabled or react according to the parameter settings for the respective
module: They provide a substitute value as set in the parameters or retain the last value
output and thus hold the controlled process in a safe operating mode.
Automation system
System Manual, 12/2014, A5E03461182-AC
Commissioning
10.5 Operating modes of the CPU
155