Technical data

Bus connectors and preassembled cables
6.3 FastConnect D-sub bus connector
PROFIBUS Network Manual
System Manual, Edition 04/2009, C79000-G8976-C124-03
149
③ Cover for insulation piercing contacts
Insert the green and red wires as far as the limit stop in the open contact cover
Close the contact cover completely (push down as far as the limit stop)
④ Press the cable into the recess (the cable shield must lie on the contact element)
⑤ Close the housing cover and screw down
⑥ PG connector (only with 6ES7972-0BB60-0XA0)
Bus connection
● Bus connection for first and last node on PROFIBUS.
The cable must always be connected on the left (see A1, B1).
Switch setting for the first and last node on PROFIBUS: "ON" (terminating resistor
activated).
● Bus connection for all other nodes on PROFIBUS.
The incoming cable must always be connected on the left (A1, B1). The outgoing cable
must always be connected on the right (A2, B2).
Switch setting for all other nodes on PROFIBUS: "OFF" (terminating resistor deactivated).
If the switch is set to "ON", the PROFIBUS to the remaining nodes is disconnected at this
point (for example during servicing).
Note
The bus cables are connected using the insulation piercing technique (Fast Connect).
The insulation piercing terminals are designed for 10 connection cycles. If you want to
reuse a cable that has already been connected, you will first need to cut off the end.