Siemens SIMATIC NET S7-400 User Manual

Properties and services
1.4 Further services and characteristics of the CP
CP 443-1 (EX30)
Manual, 03/2019, C79000-G8976-C255-05
17
●
Module access protection
To protect the module from accidental or unauthorized access, protection can be
configured at various levels.
●
IP access protection (IPACL)
Using IP access protection gives you the opportunity of restricting communication over
the CP of the local S7 station to partners with specific IP addresses.
●
IP configuration
For the PROFINET interface, you can configure how and with which method the CP is
assigned the IP address, the subnet mask and the address of a gateway.
The IP configuration and the connection configuration can also be assigned to the CP by
the user program (program block IP_CONFIG; see /11/ (Page 84)).
Note: Does not apply to S7 connections.
●
Web diagnostics
With the aid of Web diagnostics, you can read out the diagnostics data from a station
connected via the CP to a PG/PC with a Web browser. From the integrated Download
Center, you can download firmware updates.
The Web pages contain the following information:
– Module and status information
– Special information on S7 connections
If you do not require this function, you can disable it in the STEP 7 configuration and
disable the port ("IP access protection").
●
Diagnostics buffer extract request
With the aid of a Web browser, the CP supports the option of obtaining an extract of the
diagnostics buffer containing the most recent diagnostics events of the CPUs and CPs
located in the same S7 station as the CP.
●
Connection diagnostics with the AG_CNTEX program block
With the AG_CNTEX program block, you can diagnose connections.
– When necessary, you can activate or deactivate connections or initiate
reestablishment of a connection.
– You can check the reachability of the connection partners using the PING function.
– You can find out which connection types are set up for the SEND / RECEIVE
interface.
●
S5/S7 addressing mode
The addressing mode can be configured for FETCH/WRITE access as the S7 or S5
addressing mode (S7 addressing mode only for data blocks / DBs).

Siemens SIMATIC NET S7-400 Specifications

General

Brand	Siemens
Model	SIMATIC NET S7-400
Category	Conference System
Language	English