Siemens S7-300 - 12 STEP 7 Special Diagnostics; Overview

Configuring and commissioning S7 CPs for Industrial Ethernet
Configuration Manual, 09/2013, C79000-G8976-C182-13
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STEP 7 special diagnostics
12
The STEP 7 special diagnostics (special diagnostics / 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 STEP 7 special diagnostics tool to remedy the
situation.
● When you are working with the diagnostic tool, the integrated help system provides you
with contextrelated support.
Note
STEP
7 special diagnostics supports not only diagnostics for CPs (communications
modules) but also other module types such as th
e IE/PB Link. In the sections below, the
term CP is therefore synonymous with all modules with which you can run NCM S7
diagnostics functions.
12.1
Overview
Diagnostics options in STEP 7
STEP 7 provides you with a graded concept allowing you to query information about the
status of your SIMATIC S7 components and functions and to sort out problems in a variety of
different situations. You will find:
●
Hardware diagnostics and troubleshooting with STEP 7
Hardware diagnostics provides dynamic information on the operating mode of modules
including CPs when the S7 station is online.
You can recognize the existence of diagnostics information for a module based on the
diagnostics icons. Diagnostic icons show the status of the corresponding module and
also the operating mode of CPUs.
●
Communication diagnostics with STEP 7 special diagnostics
The STEP 7 special diagnostics described here provides dynamic information on the
operating state of the communications functions of online CPs or modules.
●
Diagnostics of the communication and the status of modules of an S7 station
For details, see section Web diagnostics (Page 167)
●
Diagnostics of security-relevant data with SCT online diagnostics
The SCT online diagnostics via HTTPS provides dynamic information about security-
relevant data of online security CPs or modules. You will find more detailed information in
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