Siemens S7 appendix Setting Block Parameters Automatically1, Response to Incorrect Addresses

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.

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.

146	SIMATIC NET NCM S7 for Industrial Ethernet
	C79000-G8976-C129–06