Siemens SIMATIC NET PROFIBUS - Manual (Page 95)

Configuring Networks
3-29
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Table 3-9 Constants for Calculating the
Slot Time with DP Standard
(redundant optical ring)
Transmission
rate
a b c
12 Mbps 1651 240 28
6 Mbps 951 120 24
3 Mbps 551 60 24
1.5 Mbps 351 30 24
500 Kbps 251 10 24
187.5 Kbps 171 3.75 24
93.75 Kbps 171 1.875 24
45.45 Kbps 851 0.909 24
19.2 Kbps 171 0.384 24
9.6 Kbps 171 0.192 24
Table 3-10 Constants for Calculating the
Slot Time with DP/FMS (”Universal”) and DP
with S5–95U (redundant optical ring)
Transmission
rate
a b c
12 Mbps 1651 240 28
6 Mbps 951 120 24
3 Mbps 551 60 24
1.5 Mbps 2011 30 24
500 Kbps 771 10 24
187.5 Kbps 771 3.75 24
93.75 Kbps 451 1.875 24
45.45 Kbps 851 0.909 24
19.2 Kbps 181 0.384 24
9.6 Kbps 171 0.192 24