User manual

105G Wireless Gateway User Manual
Elpro_man_105g_1.18.doc Page 92
Tset
The setup time determines the length of time elapsing in the node between a data frame being
received and a response occurring
1 t_bit <= Tset <= 494 t_bit
Tqui
The quiet time is the time a modulator needs after recognizing a send frame to switch from send
to receive.
0 t_bit <= Tqui <= MIN(31 t_bit, Min. Tsdr - 1)
Gap Factor
The Gap Factor determines how many token rounds occur before a new active node (master) can
be added to the token ring.
1 <= Gap Factor <= 100
Retry Limit
The Retry Limits determines the number of attempts (repeated message frames) allowed to
access a node.
1 <= Retry Limit <= 15
HSA
All active nodes (masters) scan the network continuously up to the HSA (highest station
address). HSA must be set at minimum to the highest Profibus address (master or slave)
connected to the network.
0 <= HSA <= 126
Delta_Ttr
This value can be set for multi master networks with the selected profile Multi Master. Delta Ttr
is added to the calculated Ttr to increase the Ttr for using multiple masters in a network.
256 t_bit <= Ttr <= 16.776.960 t_bit
Non-adjustable bus parameters
Ttr
The target rotation time determines the maximum available time for a token pass. During this
time all active nodes (masters) obtain the token one time to send data. E-Series Config Software
calculates an optimized Ttr depending on the values of other bus parameters. If an individual bus
parameter is changed, pressing the Recalculate-button recalculates the Ttr including Delta_Ttr.
Watchdog
The watchdog determines the watchdog time transferred to slaves if the watchdog is enabled.
Tid2
The idle time 2 determines the maximum length required before a transmitting node can send the
next message after sending a message frame that is not acknowledged.