Siemens SIMATIC NET S7-300 User Manual

A-262
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
8 NCM S7 Diagnostics
The NCM S7 Diagnostics described here provides dynamic information on the
operating state of the communication functions of online CPs.
This chapter provides a general overview of the individual diagnostic functions.
The following checklist will help you to recognize several typical problems and their
possible causes and shows how you can use the NCM S7 for PROFIBUS
diagnostics tool to remedy the situation.
Further information is available from the following sources:
 When you are working with the diagnostic tool, the integrated help system
provides you with context-related support.
 You will find detailed information on working with STEP 7 programs in the Help
on STEP 7, which includes the topic “Diagnosing Hardware”
Note
NCM S7 Diagnostics supports not only diagnostics for CPs (communication
modules) but also other module types such as the IE/PB Link. In this chapter, the
term CP is therefore synonymous with all modules with which you can run NCM
S7 diagnostic functions.

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)