Specifications

51 GX Configurator-DP

Parameter Description

Baudrate Transfer rate (must be supported by all slaves)

T_sl Slot time (max interval to wait for response)

min T_sdr min station delay of responder

max T_sdr max station delay of responder

T_qui Quiet time

T_set Setup time

T_tr Target rotation time

GAP factor controls the GAP update timer

HSA highest station address

Max retry limit max. number of retries

When pressing the <Default> button all values are set to their default values for the currently

selected baud rate.

Note:

If you change the baud rate of an existing PROFIBUS DP network, power off the slaves.

Otherwise the slaves cannot synchronize with the newly defined baud rate.

The inputs are checked against the input limits when leaving the dialog with the <OK> button.

Additionally the following consistency checks are performed:

min T_sdr < max T_sdr

T_qui < min T_sdr

max T_sdr < T_sl

T_sl < T_tr

Note:

If you are not an experienced PROFIBUS network administrator the bus parameters

should not be changed except in the following cases:

more than 15 slave stations are connected (target rotation time has to be calculated

again)

the network consists of more than 1 master (target rotation time has to be calculated

again)

For the correct parameter setting of the target rotation time TTR (t_tr) please refer to the

PROFIBUS standard. However, it is important that the target rotation time is large enough to

enable the master module to poll each connected slave once per token cycle.

Insert DP Slave

In the graphical network editor right-click on the PROFIBUS line to open the context menu. Select

'Insert DP-Slave' to access the

GSD Device Database

. After having selected a Slave Device

Group, a list of all slave models assigned to the respective group is displayed. For the selected

slave the vendor and revision string, the bitmap and the path of the GSD file and the bitmap file

are displayed.