Locating The Ethernet (Mac) Address On The Cpu - Siemens S7-1200 System Manual

Hide thumbs Also See for S7-1200:

Table of Contents

Using the "Extended download to device" dialog to test for connected network devices

The S7-1200 CPU "Download to device" function and its "Extended download to device"

dialog can show all accessible network devices and whether or not unique IP addresses

have been assigned to all devices. To display all accessible and available devices with their

assigned MAC or IP addresses, check the "Show all accessible devices" checkbox.

If the required network device is not in this list, communications to that device have been

interrupted for some reason. The device and network must be investigated for hardware

and/or configuration errors.

Locating the Ethernet (MAC) address on the CPU

In PROFINET networking, a Media Access Control address (MAC address) is an identifier

assigned to the network interface by the manufacturer for identification. A MAC address

usually encodes the manufacturer's registered identification number.

The standard (IEEE 802.3) format for printing MAC addresses in human-friendly form is six

groups of two hexadecimal digits, separated by hyphens (-) or colons (:), in transmission

order, (for example, 01-23-45-67-89-ab or 01:23:45:67:89:ab).

Each CPU is loaded at the factory with a permanent, unique MAC address. You cannot

change the MAC address of a CPU.

S7-1200 Programmable controller

System Manual, 03/2014, A5E02486680-AG

5.7 Configuring the CPU for communication

Device configuration