Configuring Logical Network Connections Between Two Devices - Siemens S7-1200 System Manual
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- Operating instructions manual (132 pages) ,
- Programming manualline (74 pages) ,
- Manual (46 pages)
Table of Contents
Communication
10.2 PROFINET
Table 10- 25 Required steps in configuring communications between two CPUs
Step
1
Establishing the hardware communications connection
A PROFINET interface establishes the physical connection between two CPUs. Since Auto-Cross-Over
functionality is built into the CPU, you can use either a standard or crossover Ethernet cable for the
interface. An Ethernet switch is not required to connect the two CPUs.
Refer to "Communication with a programming device: Establishing the hardware communications
connection" (Page 550) for more information.
2
Configuring the devices
You must configure two CPUs in your project.
Refer to "Communication with a programming device: Configuring the devices" (Page 551) for more
information.
3
Configuring the logical network connections between two CPUs
Refer to "PLC-to-PLC communication: Configuring logical network connections between two devices"
(Page 554) for more information.
4
Configuring an IP address in your project
Use the same configuration process; however, you must configure IP addresses for two CPUs (for
example, PLC_1 and PLC_2).
Refer to "Device configuration: Configuring an IP address for a CPU in your project" (Page 159) for more
information.
5
Configuring transmit (send) and receive parameters
You must configure TSEND_C and TRCV_C instructions in both CPUs to enable communications between
them.
Refer to "Configuring communications between two CPUs: Configuring transmit (send) and receive
parameters" (Page 555) for more information.
6
Testing the PROFINET network
You must download the configuration for each CPU.
Refer to "Device configuration: Testing the PROFINET network" (Page 162) for more information.
10.2.5.1
Configuring logical network connections between two devices
After you configure the rack with the CPU, you are now ready to configure your network
connections.
In the Devices and Networks portal, use the "Network view" to create the network
connections between the devices in your project. First, click the "Connections" tab, and then
select the connection type with the dropdown, just to the right (for example, an ISO on TCP
connection).
To create a PROFINET connection, click the green (PROFINET) box on the first device, and
drag a line to the PROFINET box on the second device. Release the mouse button and your
PROFINET connection is joined.
Refer to "Device Configuration: Creating a network connection" (Page 149) for more
information.
554
Task
System Manual, 03/2014, A5E02486680-AG
S7-1200 Programmable controller
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