Siemens 6DS2-510-0xx00-0xa0 Parameter of configuration file DOSCONF.DAT for CP5412-A1, L2ts =

Product Information	February, 1999
BRIDGE CS-L2

6.2 Parameter of configuration file DOS_CONF.DAT for CP5412-A1

The configuration file DOS_CONF.DAT includes the PROFIBUS-TM bus parameters. A specification of slot coordinates is not necessary.

Bus parameters:

Parameter	l2_ts =	Station No. on PROFIBUS-TM (decimal representation)
		Default setting: 32
		Must be identical to the station address in BATA from
		BR_SYS.INI. If different addresses are entered, the
		parameter 'l2_ts' from DOS_CONF.DAT is used.
		Note: The station addresses should be assigned without gaps
		if possible. This may increase the performance.
Parameter	l2_hsa =	Highest station address on PROFIBUS-TM
		(decimal representation)
		Default setting: 32
		Note: If the actual highest station address is entered exactly,
		this may increase the performance. However, to retain
		a reserve, it is also advisable when configuring to set a
		higher station address than that actually present.
Parameter	l2_ttr =	Token rotation time (decimal representation)
		Default setting: 90000
		The default setting applies to a maximum of 10 active stations
		on the PROFIBUS-TM bus. If more than 10 stations are present
		on the PROFIBUS-TM bus, the parameter must be calculated
		according to the following equation and entered:
		l2_ttr = 9000 * [number of active PROFIBUS-TM stations].
		Note: The factor 9000 in the equation only applies to a baud
		rate of 1.5 MBaud.

All bus parameters are matched to a transmission rate of 1.5 MBaud.

Optimization requires detailed knowledge of the PROFIBUS standard, Part 1, DIN 19245. Selection of a different transmission rate is illegal, and may result in faulty functioning. The bus parameters are described in the SINEC Manual

TF5412/MS-DOS, WINDOWS (C79000-G8976-C031).

Attention: Apart from the bus parameters, the configuration file DOS_CONF.DAT also contains system parameters for handling BRIDGE CS-L2 communication tasks. Unauthorized modifications to these usually result in major faults in the BRIDGE CS-L2.

Note: The BUS address (BA) cannot be configured in DOS_CONF.DAT .

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