Siemens AS 488, TM manual Wire breakage, No. C7900-G7076-C150

Product Information	November, 2001
AS 488/TM	M02.02

2.4 Installation of the Reloadable DP Driver Blocks (DPAE, DPAA, DPBE, DPBA)

In addition to the execution system and the standard blocks of the AS 488/TM, your memory card contains a so-called reloadable file with the optimized driver blocks for the PROFIBUS-DP I/O bus. These blocks are not present in the system data area of the AS, and are thus not activated automatically. You can load these blocks into your user memory and activate them.

To do this, install your "Commissioning terminal" and transfer the blocks from your memory card to the user memory of your AS using the operation "LA:DP_TREIB.NL;". The loaded blocks must then be parameterized to the type numbers provided in their application, and activated. You activate the parameter settings in the AS input mode using the input instruction "BT,DP:@;".

Set the desired type numbers of the DP blocks in the parameterization display using the parameters 1, 3, 5 and 7. If this blocks already are existing in the AS, the existing type numbers were accepted. Your parameter settings are accepted using the parameterization input "P,9,1;", and the blocks are stored in the user memory of your AS. The activation procedure can be previously aborted using "P,11,1;". The reloaded file is then no longer present in your AS. However, you can carry out the installation procedure from the beginning.

If you already have installed DP driver blocks and you want to update your system software, you have to update the algorithm of the DP driver blocks!

After successful activation, the user structure and the driver blocks must be re-archived to the memory card, otherwise they will be lost during the next boot procedure.

Note:	The data structures of the DP driver for CP581TM (in AS230/235) and
	AS 488/TM are identically, but the program algorithms have to be exchanged.
	With transfering of old user structures to AS 488/TM, following steps have to be
	done:
	- Install matching driver programs: "BT,DP:@;" (see above).
	- Input again the parameters BGNR and BADR in all block instancies, even if
	there value doesn't change (the check has to be run through).
Note:	DPAE driver and analogue input modules with NAMUR range of values for
	wire breakage
	The DPAE driver does not know the NAMUR range of values for wire breakage
	(e.g. AE module 6ES7 331−7RD0). However, with correct configuration, the AE
	modules can be made to return the S7 standard value, 7FFF (hex), if a wire
	does actually break, this is then interpreted by the DPAE driver as a wire
	breakage: in order to do this, the release of the wire breakage diagnosis should
	be parameterised using COM PROFIBUS (further information can be found in
	the S7 manual 'Ex-peripheral modules’, which can be ordered quoting reference
	no. C7900-G7076-C150).

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