Easy Book
Manual, 05/2009, A5E02486774-01
73
Communications
6
The integrated PROFINET port of the CPU supports both Ethernet and TCP/IP-based
communications standards in order to communicate with the following devices:
● Programming device with STEP 7 Basic
● HMI devices
● Other CPUs or non-Siemens devices using standard TCP communications protocols
transmission block (T-block) instructions
Direct connection: Programming
device connected to a CPU
• The project must include the CPU.
• The programming device is not
part of the project, but must be
running STEP 7 Basic.
Direct connection: HMI panel
connected to a CPU
• The project must include both the
CPU and the HMI.
Direct connection: A CPU connected
to another CPU
• The project must include both
CPUs.
• You must configure a network
connection between the two
CPUs.
① CSM1277 Ethernet Switch
Network connection: More than two
devices connected together
• The project must include the
devices (CPU and HMI). You do
not include the router in the
configuration.
• You must configure the network
connections between the devices.
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