Siemens SIMATIC NET PROFIBUS Owner's Manual page 95

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