Siemens SIMATIC NET S7-300 User Manual

8 NCM S7 Diagnostics
A-279
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
8.6 Checklist for “Typical Problems” in a System
Meaning
The following lists contain several typical problems and their possible causes and
how you can use the NCM S7 Ethernet Diagnostics tool to remedy the situation.
The checklists deal with the following topics:
1. Checklist for General CP Functions
2. Communication Connections Checklist
Note
In the column “Identifying the Cause and Remedy”, you will see the diagnostic
function recommended for dealing with the problem shown in bold face.

Siemens SIMATIC NET S7-300 Specifications

General

Product Type Designation	SIMATIC NET S7-300
Mounting	DIN rail mounting
Protection Class	IP20
CPU Models	Various models available (e.g., CPU 312, CPU 314)
Communication Interfaces	MPI, PROFIBUS DP
Power Supply	24 V DC power supply required. Different power supply modules available.
I/O Modules	Digital input modules, digital output modules, analog input modules, analog output modules
Programming	STEP 7 software
Supply Voltage	24V DC or 120/230V AC (depending on model)
Digital Inputs	Available via digital input modules
Digital Outputs	Available via digital output modules
Analog Inputs	Available via analog input modules
Analog Outputs	Available via analog output modules
Communication Functions	MPI, PROFIBUS DP, Ethernet (depending on model)
Protocols	MPI, PROFIBUS DP, TCP/IP (depending on model)
Operating Temperature	0°C to 60°C
Storage Temperature	70 °C
Memory	Depends on CPU model (e.g., 32 KB to 1.5 MB)