Device configuration
5.7 Configuring the CPU for communication
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
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Table 5- 9 Parameters for the IP address
Subnet Name of the Subnet to which the device is connected. Click the "Add new subnet" button to create a
new subnet. "Not connected" is the default. Two connection types are possible:
• The "Not connected" default provides a local connection.
• A subnet is required when your network has two or more devices.
IP protocol
Assigned IP address for the CPU
Click the checkbox to indicate the use of an IP router
Assigned IP address for the router, if applicable
Note
All IP addresses are configured when you download the project. If the CPU does not have a
pre
-configured IP address, you must associate the project with the MAC address of the
target device. If your CPU
is connected to a router on a network, you must also enter the IP
The "Set IP address using a different method" radio button allows you to change the IP
address online or by using the "
T_CONFIG (Page 541)" instruction after the program is
downloaded. This IP address assignment method is for the CPU only.
Downloading a hardware configuration with "Set IP address using different method"
After downloading a hardware configuration with the "Set IP address using a different
method" option enabled, it is not possible to transition the CPU operating mode from RUN
to STOP or from STOP to RUN.
User equipment continues to run under these conditions and can result in unexpected
machine or process operations, which could cause death, severe personal injury, or
property damage if proper precautions are not taken.
Ensure that your CPU IP address(es) are set before using the CPU in an actual automation
environment. This can be done by using your STEP 7 programming package, the S7-1200
Tool, or an attached HMI device in conjunction with the T_CONFIG instruction.
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