Siemens SIMATIC TI555 - Connecting Terminal Block Trunk Lines; Table 4-2 Maximum Cable Length for Trunk Lines

Cabling and Wiring the System
4-12
TI545/TI555 System Manual
Installing Remote I/O Cables (continued)
The cable that connects the terminal blocks is called a trunk line. See
Figure 4-2. The maximum trunk length depends on the cable type and
number of terminal blocks used in your installation. See T able 4-2.
T able 4-2 Maximum Cable Length for T runk Lines
Number of
Terminal Blocks
Maximum Distance in Feet (Meters)*
(Belden Cables)
Terminal
Blocks
9860 cable 9271 cable 9182 cable
2 – 5 3300 (1006) 1 100 (335) 2200 (670)
6 3200 (975) 1067 (325) 2133 (650)
7 3100 (945) 1033 (315) 2067 (630)
8 3000 (914) 1000 (305) 2000 (610)
9 2900 (884) 967 (295) 1933 (589)
10 2800 (853) 933 (284) 1867 (569)
11 2700 (823) 900 (274) 1800 (548)
12 2600 (792) 867 (264) 1733 (528)
13 2500 (762) 833 (254) 1667 (508)
14 2400 (732) 800 (244) 1600(488)
15 2300 (701) 767 (234) 1533 (467)
16 2200 (671) 733 (223) 1467 (447)
17 2100 (640) 700 (213) 1400 (427)
*Figures in parentheses indicate distance in meters.
NOTE: Cable types 9860 and 9271 can be mixed on the trunk line, but cable
type 9182 must be used alone.
Connecting
Terminal
Block T runk Lines