Configuring The Ip Address Of The Cpu - Siemens SIMATIC S7-1200 Manual
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Easy to create the device configuration
5.6 Configuring the IP address of the CPU
● Transmit and receive message: Configure options related to transmitting and receiving
data (such as the message-start and message-end parameters)
You can also change these configuration parameters with your user program.
5.6
Configuring the IP address of the CPU
Because the CPU does not have a pre-configured IP address, you must manually assign an
IP address. You configure the IP address and the other parameters for the PROFINET
interface when you configure the properties for the CPU.
● In a PROFINET network, each device is assigned a unique Media Access Control
address (MAC address) by the manufacturer for identification. Each device must also
have an IP address.
● A subnet is a logical grouping of connected network devices. A mask (also known as the
subnet mask or network mask) defines the boundaries of a subnet. The only connection
between different subnets is via a router. Routers are the link between LANs and rely on
IP addresses to deliver and receive data packets.
Before you can download an IP address to the CPU, you must ensure that the IP address for
your CPU is compatible with the IP address of your programming device.
You can use STEP 7 to determine the IP address of your programming device:
1. Expand the "Online access" folder in the Project tree to display your networks.
2. Select the network that connects to the CPU.
3. Right-click the specific network to display the context menu.
4. Select the "Properties" command.
Note
The IP address for the CPU must be compatible with the IP address and subnet mask for
the programming device. Consult your network specialist for a suitable IP address and
subnet mask for your CPU.
80
Communication module (CM) and communication
board (CB)
• Port configuration: Configure the communication
parameters, such as baud rate, parity, data bits,
stop bits, and wait time.
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Manual, 03/2014, A5E02486774-AF
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