Stop Mode - Siemens SIMATIC ET 200SP System Manual

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Example for the "Comparison preset to actual configuration" parameter
"Startup CPU only if compatible":
The DI 16x24VDC ST input module with 16 digital inputs is a compatible replacement for a
DI 8x24VDC ST input module with 8 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.
11.6.2

STOP mode

Behavior
The CPU does not execute the user program in STOP mode.
All outputs are disabled or react according to the parameter settings for the particular I/O
module: They provide a substitute value as set in the parameters or retain the last value
output keeping the controlled process in a safe operating status.
In STOP mode, the motor starter responds according to how it was parameterized for the
CPU STOP state. The CPU STOP state can be circumvented with the manual local control
(Local Control) function. If the CPU is switched off, a motor can be switched on in the motor
starter's commissioning mode.
You will find additional information in the Motor starter
(https://support.industry.siemens.com/cs/ww/en/view/109479973) manual.
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ
Sets the startup type after POWER ON
Defines the startup behavior when a module in a slot does not correspond to the config-
ured module. You can set this parameter centrally, on the CPU or for each module.
When you change the setting for a module, the setting made centrally for this module no
longer applies.
• Startup CPU only if compatible: In this setting a module on a configured slot has to be
compatible with the configured module. Compatible means that the module matches
in terms of the number of inputs and outputs and with respect to its electrical and
functional properties.
• Startup CPU even if mismatch: With this setting the CPU starts up regardless of the
type of module plugged in.
Specifies a maximum period (default: 60000 ms) in which the I/O must be ready for op-
eration. The CPU changes to RUN.
If the central and distributed I/O is not ready for operation within the configuration time,
the startup characteristics of the CPU depends on the setting of the "Comparison preset
to actual configuration" parameter.
Commissioning
11.6 Operating modes of the CPU
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