Siemens SIMATIC TI500 - Double Drops; Short Drops; Multidrop Taps; Additional Tap Spacing Rules

Network Installation
2-9
TIWAY I Gateway User Manual
100′
80′
100′
max
30″
30′
Double Drop
Drop lines less
than 36 inches
can be ignored.
100′
50′ min
I000000
36 ″ max
Figure 2-6 Additional T ap Spacing Rules
If a tap cable is installed less than the minimum distance as stated in the
primary rule, then the two drops, the previous one and the one being
installed, are considered a double drop .
Double drops are allowed, but triple drops are not allowed.
After installing a double drop, the next tap must be placed at the minimum
distance or farther . In this case, the minimum distance would be one half
the distance of the longest of the two tap lines making up the double drop.
Drops that have a tap line that is less than 36 inches can be ignored in
calculating the minimum distance between taps.
There is no limit to the number of drop stations that can be connected to the
same tap line.
Each station must have its own tap, and the overall drop line length cannot
exceed 100 feet. The cable used to attach each station to the drop line
cannot exceed the 36-inch maximum.
Double Dr ops
Short Dr ops
Multidr op T aps