Stop Operating State - Siemens SIMATIC S7-1500 System Manual

Commissioning
13.4 Operating states of the CPU
Setting startup behavior
Proceed as follows to set the startup behavior:
1. Select the CPU in the device view of the STEP 7 hardware network editor.
2. Select the "Startup" area in the properties under "General".
Figure 13-1
① Sets the startup type after POWER ON
② Defines the startup behavior for the event that a (distributed I/O) module in a slot does
③ Specifies a maximum period (default: 60 000 ms) in which the distributed I/O must be
13.4.3

STOP operating state

Response
The CPU does not execute the user program in STOP.
All outputs are disabled or react according to the parameter settings for the relevant module:
They provide a configured substitute value or retain the last value output and thus keep the
controlled process in a safe operating state.
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Setting startup behavior
not correspond to the configured module. This parameter applies to the CPU and to all
the modules for which no other setting has been selected.
• Startup CPU only if compatible: With this setting, a module in a configured slot must
be compatible with the configured module. Compatible means that the module has
the relevant number of inputs and outputs and the electrical and functional properties
correspond.
• Startup CPU even if mismatch: With this setting, the CPU starts up irrespective of the
type of module plugged.
ready for operation.
If the distributed I/O is ready for operation within the configuration time, the CPU switch-
es to RUN.
If the distributed I/O is not ready for operation within the configuration time, the startup
behavior of the CPU depends on the hardware compatibility setting.
SIMATIC Drive Controller
System Manual, 11/2023, A5E46600094-AD