Lenze PLC Designer PLC Designer (R3-1) - Manual (Page 923)

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DMS 4.1 EN 03/2011 TD29 921
The parameter table shows for each Parameter the Value, Unit and a short Description.
The following parameters might be described and can be modified by a click on a
selected value field:
TSL [tBit] 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. TSDR [tBit] Minimum station delay responder time; minimum reaction time after which
a station on the bus may reply (min. 11 tBit)
max. TSDR [tBit] Maximum station delay responder time; maximum time span within which
a slave must reply.
TQUI [tBit] Quiet time; idle period which must be taken into account during conversion
of NRZ (Non Return to Zero) signals to other codings (switchover time for
repeater)
TSET [tBit] Setup time
TTR [tBit] Target rotation time; 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 Gap update factor; 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.
Retry limit Maximum number of retries (request attempts) by the master in case of
failure, that is if it has not received a valid response from the slave.
Slave interval [µs] Minimum slave interval, that is time span between two bus cycles in which
the slave can process a request from the master (time basis 100ms). The
value entered here must be checked against the respective specifications in
the slave's GSD-file.
Poll timeout [ms] Minimum poll timeout; 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 [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.
tBit: Time unit for transfer of a bit on the PROFIBUS; Reciprocal value of the
transmission rate; for example 1 TBit at 12MBaud=1/12.000.000 Bit/sec=83ns