Siemens PROFINET CP 343-1 Manual page 19

Characteristic
Inputs

Outputs

Size of the consistency area for a submodule
Permitted number of CP 343-1 modules that can be used as
PROFINET IO controllers within an S7-300 station
*) If data is kept on the CPU, the number of operable PROFINET IO devices may be < 32. This depends on the free
configuration memory of the CPU type being used.
**) The number of PROFINET IO devices that can be operated may reduce if the devices used require extensive
configuration data due to numerous submodules. In this case, the memory of the CP is not adequate and you will
receive a message about lack of resources in the diagnostics buffer of the CP when downloading the configuration data.
***) The diagnostics addresses of the PROFINET IO devices cannot be used as an input on the IO controller. The data area
of the inputs is reduced by the diagnostics addresses used
Configuration limits of the CP as a PROFINET IO device
The CP supports the following maximum configuration as a PROFINET IO device:
Table 2- 6
Characteristic
Number of PROFINET IO connections
Size of the output area of the PROFINET IO
device
Size of the IO data area per sub module on the
PROFINET IO device


Size of the consistency area for a submodule
Maximum number of submodules
* For the size of the user data, refer to the following section.
CP 343-1
Manual, 10/2012, C79000−G8976−C201-07
Configuration limits of the CP as a PROFINET IO device
Inputs
Outputs
2.5 PROFINET IO characteristic data
Explanation / values
Note: Regardless of the CP type (EX30, GX30, GX31 ...),
only 1 CP may be a PROFINET IO controller.
As PROFINET IO device:

1 PROFINET connection to a PROFINET IO
controller
or
As shared device:

2 PROFINET connections to 2 PROFINET IO
controllers
512 bytes max. *
240 bytes

240 bytes

240 bytes
32
Performance data
240 bytes
240 bytes
240 bytes
1
Value
19