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Performance data

2.5 PROFINET IO characteristic data

CP 343-1

Manual, 10/2012, C79000−G8976−C201-07

Characteristic Explanation / values

 Inputs

 Outputs

240 bytes

Size of the consistency area for a submodule 240 bytes

Permitted number of CP 343-1 modules that can be used as

PROFINET IO controllers within an S7-300 station

Note: Regardless of the CP type (EX30, GX30, GX31 ...),

only 1 CP may be a PROFINET IO controller.

*) 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 Configuration limits of the CP as a PROFINET IO device

Characteristic Value

Number of PROFINET IO connections

 As PROFINET IO device:

1 PROFINET connection to a PROFINET IO

controller

 As shared device:

2 PROFINET connections to 2 PROFINET IO

controllers

Size of the output area of the PROFINET IO

device

512 bytes max. *

Size of the IO data area per sub module on the

PROFINET IO device

 Inputs

 Outputs

 240 bytes

Size of the consistency area for a submodule 240 bytes

Maximum number of submodules 32

* For the size of the user data, refer to the following section.

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Siemens SIMATIC NET CP 343-1 Manual de usuario Pagina 19