Siemens S7 appendix Assigning Addresses for the First Time Applies to Latest CPs

Installing and Starting the Ethernet CP with STEP 7

2.3Assigning Addresses for the First Time (Applies to Latest CPs)

Meaning of the Address Assignment – MAC Address and IP Address

The CP ships with a factory-set MAC address. Without further configuration, the device can only be accessed over the Ethernet port using this MAC address.

In its original state, you can already use the following functions via the CP using the ISO protocol and the factory-set MAC address:

SDownload the defined configuration to the CP or CPU

SRun diagnostics on the CP or CPU

Before you can download defined configuration data to the device using an IP address, you must first assign an IP address to the CP.

Assigning the Address – Options and Recommendations

There are three ways of assigning this address in STEP 7:

SAddressing by selecting the target system in the SIMATIC Manager

This option allows you to assign the address without having to set up a STEP 7 project. This is useful, for example, if you want to download defined configuration data you created offline to the S7 station.

This is described in Section 2.3.1.

SAddressing using the properties dialog in HW Config or NetPro

This option assumes that the CP was networked in STEP 7. The advantage of this method is that the IP parameters set during configuration in STEP 7 / NetPro can be used.

In the “Addressing” tab, you assign the previously configured IP address and IP parameters to the CP.

This is necessary before the configuration data can be downloaded to the CP over Ethernet.

This is described in Section 2.3.2.

SDownloading configuration data using the ISO protocol

Another option is to download configuration data with a defined IP address using the ISO protocol (see above).

64	SIMATIC NET NCM S7 for Industrial Ethernet
	C79000-G8976-C129–06