Siemens SIMATIC TI555 - Figure 4-5 Adding a Terminating Resistor; Table 4-1 Terminating Resistors

Cabling and Wiring the System
4-10
TI545/TI555 System Manual
Installing Remote I/O Cables (continued)
6. If you are not using another terminal block, install a terminating
resistor across the terminal screws securing the cable wires with the
colored coded insulation jacket. See Figure 4-5.
NOTE: The terminating resistor value depends on the type of cable being
used. See T able 4-1.
From CPU
Terminating
Resistor
Figure 4-5 Adding a T er minating Resistor
T able 4-1 Ter minating Resistors
Cable Type Resistor Value Color Code
9860 120 Ohms Brown-Red-Brown-Gold
9271 120 Ohms Brown-Red-Brown-Gold
9182 150 Ohms Brown-Green-Brown-Gold