Siemens SIMATIC NET PROFIBUS - Manual (Page 45)

Topologies of SIMATIC NET PROFIBUS Networks
2-19
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Table 2-2 Tap Line Lengths for DP/PA Couplers
Number of tap lines Maximum length of the tap line
DP/PA coupler DP/PA coupler Ex [i]
1 to 12 max. 120 m max. 30 m
13 to 14 max. 90 m max. 30 m
15 to 18 max. 60 m max. 30 m
19 to 24 max. 30 m max. 30 m