Programming FCs (Functions) and FBs for S7 Ethernet CPs

Setting Block Parameters Automatically1)

To ensure correct parameter settings for the block calls, The LAD/STL/FBD editor in STEP 7 provides you with the option of accepting all the relevant parameters from the hardware configuration (HW Config) and from the connection configuration (NetPro).

When assigning the parameters for the block in the user program, follow the steps outlined below:

1.Select the block call and its block parameters;

2.Right-click and select the menu command “Connections...”.

3.Depending on the block type, you can now select the connection and/or module intended for the block from a list.

4.Confirm your selection; as far as possible, the available parameter values are entered in the block call.

Response to Incorrect Addresses

If the S7 CPU cannot communicate with the Ethernet CP using the specified module base address, the errors described below occur.

Cause

 

Reaction / Code

 

 

No module can be addressed or

The CPU remains in the stop with system error

identified at the specified CP address.

state; in this case, evaluate the diagnostic

 

buffer of the CPU.

 

 

The CP address points to a different

Possible error code in the STATUS parameter

module type.

of the communication block:

 

8184H

System error

 

80B0H

Module does not

 

 

recognize data

 

 

record.

 

80C0H

Data record cannot

 

 

be read.

 

80C3H

Resources

 

 

occupied (memory).

 

80D2H

Logical base address

 

 

wrong.

 

 

 

Notice

If you inadvertently address not a CP but another module type, errors occur that cannot be indicated by the error messages of the FCs themselves.

1). This function is possible only with the block library ..V5.0 SP3 or later.

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SIMATIC NET NCM S7 for Industrial Ethernet

Release 6/2003

C79000–G8976–C129–07

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Siemens NCM S7 appendix Setting Block Parameters Automatically1, Response to Incorrect Addresses, Cause Reaction / Code

NCM S7 specifications

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