Chapter 4
Configuration
MAN_905G_1.16
Page 88
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. ESeries 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.
Tid2
= Max. Tsdr
Tid1
The idle time 1 determines the minimum length required before a transmitting node can send
the next message after sending a message frame that is not acknowledged.
Tid1
= 35 + 2*Tset + Tqui
Trdy
The ready time determines the minimum time for a transmitting node to receive a response
message frame.
Trdy
= Min. Tsdr