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Siemens SIMATIC NET S7-300 User Manual

Siemens SIMATIC NET S7-300
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8 NCM S7 Diagnostics
A-280
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
8.6.1 Checklist for General CP Functions
Table 8-5 Checklist for Typical Problems When Operating a CP in a System
Problem Possible Cause Identifying the Cause and Remedy
The Ethernet CP will not
change to the RUN mode.
Invalid configuration
loaded on the Ethernet
CP.
Yellow STOP LED and red SF LED lit
continuously.
Call up the diagnostic buffer in NCM S7
Ethernet Diagnostics.
Example of an entry
CP STOP due to invalid CP parameter
assignment
What to do:
Correct the configuration of the Ethernet CP.
Switch set to STOP on the
Ethernet CP.
Query the operating mode in NCM S7
Diagnostics.
Operating mode: STOP, Cause: switch set to
STOP
What to do:
Change the switch to RUN on the Ethernet CP

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Siemens SIMATIC NET S7-300 Specifications

General IconGeneral
Product Type DesignationSIMATIC NET S7-300
MountingDIN rail mounting
Protection ClassIP20
CPU ModelsVarious models available (e.g., CPU 312, CPU 314)
Communication InterfacesMPI, PROFIBUS DP
Power Supply24 V DC power supply required. Different power supply modules available.
I/O ModulesDigital input modules, digital output modules, analog input modules, analog output modules
ProgrammingSTEP 7 software
Supply Voltage24V DC or 120/230V AC (depending on model)
Digital InputsAvailable via digital input modules
Digital OutputsAvailable via digital output modules
Analog InputsAvailable via analog input modules
Analog OutputsAvailable via analog output modules
Communication FunctionsMPI, PROFIBUS DP, Ethernet (depending on model)
ProtocolsMPI, PROFIBUS DP, TCP/IP (depending on model)
Operating Temperature0°C to 60°C
Storage Temperature70 °C
MemoryDepends on CPU model (e.g., 32 KB to 1.5 MB)

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