Assigning Cpus And Device Names; Assigning Internet Protocol (Ip) Addresses - Siemens S7-1200 System Manual

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Refer to "Device Configuration: Creating a network connection" (Page 149) for more

information.

Assigning CPUs and device names

Network connections between the devices also assign the PROFINET IO device to the CPU,

which is required for that CPU to control the device. To change this assignment, click the

PLC Name shown on the PROFINET IO device. A dialog box opens that allows the

PROFINET IO device to be disconnected from the current CPU and reassigned or left

unassigned, if desired.

The devices on your PROFINET network must have an assigned name before you can

connect with the CPU. Use the "Network view" to assign names to your PROFINET devices

if the devices have not already been assigned a name or if the name of the device is to be

changed. Right-click the PROFINET IO device and select "Assign device name" to do this.

For each PROFINET IO device, you must assign the same name to that device in both the

STEP 7 project and, using the "Online & diagnostics" tool, to the PROFINET IO device

configuration memory (for example, an ET200 S interface module configuration memory). If

a name is missing or does not match in either location, the PROFINET IO data exchange

mode will not run. Refer to "Online and diagnostic tools: Assigning a name to a PROFINET

device online (Page 787)" for more information.

Assigning the IP addresses

In a PROFINET network, each device must also have an Internet Protocol (IP) address. This

address allows the device to deliver data on a more complex, routed network:

● If you have programming or other network devices that use an on-board adapter card

● You can also assign an IP address to a CPU or network device online. This is particularly

● After you have configured your CPU or network device in your project, you can configure

S7-1200 Programmable controller

System Manual, 03/2014, A5E02486680-AG

connected to your plant LAN or an Ethernet-to-USB adapter card connected to an

isolated network, you must assign IP addresses to them. Refer to "Assigning IP

addresses to programming and network devices" (Page 155) for more information.

useful in an initial device configuration. Refer to "Assigning an IP address to a CPU

online" (Page 158) for more information.

parameters for the PROFINET interface, to include its IP address. Refer to "Configuring

an IP address for a CPU in your project" (Page 159) for more information.

Communication

10.2 PROFINET