Lenze PLC Designer PLC Designer (R2-x) - Manual (Page 366)

L-force | PLC Designer
The Resources
364 DMS 3.2 EN 02/2011 TD29
All parameters can also be edited manually.
Baud rate The entries already present in the GSD-file are available for selection, but only a
transmission rate supported by all slaves can be entered.
Use defaults If the option is activated, the entries made in the 'Bus parameters' dialog will be
optimized with respect to the specifications in the GSD-files; it is only possible to
edit the values if the option is deactivated.
Important : The values calculated automatically are only rough approximate
values.
Slot Time Maximum time during which the master waits, after sending a request
message, for the receipt of the first character of the slave's reply message
Min.Station Delay min. TSDR (in tbit): minimum reaction time after which a station on the bus may
reply (min. 11 tBit)
Max.Station Delay max. TSDR (in tbit): maximum time span within which a slave must reply.
Quiet Time TQUI (in tbit): idle period which must be taken into account during conversion of
NRZ (Non Return to Zero) signals to other codings (switchover time for repeater)
Target Rotation Time TTR (in tbit): token cycle time setting; projected time interval in which a master
should receive the token. Result of the sum of the token stop times of all
masters on the bus.
Gap Update Factor GAP update factor G: number of bus cycles after which the master's GAP
(address range from its own bus address to the address of the next active
station) is searched for an additional, newly inserted active station.
Max. Retry Limit maximum number of repeated request attempts by the master when it has not
received a valid response from the slave
Min. Slave Interval Time between two bus cycles in which the slave can process a request from the
master (time basis 100μs). The value entered here must be checked against the
respective specifications in the slave's GSD-file.
Poll Timeout Maximum time after which the master's reply by a master-master
communication must be retrieved by the requester (Class 2 DP master) (time
basis 1 ms).
Data Control Time Time in which the master reports its status to the slaves assigned to it. At the
same time, the master monitors whether at least one data exchange each has
taken place with the slaves within this period, and updates the
Data_Transfer_List.
Watchdog Time Time value for the access monitoring (watchdog). Setting is currently not
supported (fixed-set to 400 ms)
Base parameters of a DP slave
The Base parameter dialog of a DP slave matches that of the other modules (see 'Base
parameters of an I/O Module').