Performance data
2.4 Characteristics of open TCP/IP communication
CP 443-1 (EX30)
24 Manual, 03/2019, C79000-G8976-C255-05
The maximum number of SPEED SEND/RECEIVE calls that can be used simultaneously
(FC53, FC63) depends only on the CPU (see above).
Characteristics of open TCP/IP communication
Open TCP/IP communication provides a program interface for the transfer of connection-
oriented and connectionless services. The establishment and termination of connections is
initiated here only via the "dynamic" program interface.
The CP supports communication via ISO-on-TCP connections for this interface.
Number of dynamically generated connections over Indus-
• ISO-on-TCP connections: 1...64
Characteristic data for PROFINET IO
PROFINET IO communication of the CP is IRTcompliant. The CP supports the following
maximum configuration as a PROFINET IO controller:
Number of CPs that can be operated as PROFINET IO
controllers within an S7400 station
4
Number of possible PROFINET IO devices
*)
128
*)
, of which
• up to 64 in IRT mode
• up to 32 in "prioritized startup" mode
Size the input area over all PROFINET IO devices
Size of the output area over all PROFINET IO devices
Size of the IO data area per submodule of a module in an IO
device
• Inputs
• Outputs
240 bytes
240 bytes
Size of the consistency area for a submodule
The number of operable PROFINET IO devices can be reduced if the devices being used require extensive configura-
tion and parameter assignment data due to large numbers of submodules. In this case, the memory on the CP will not
be adequate and you will receive a message in the diagnostics buffer about lack of resources when downloading the
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