Siemens SINUMERIK ONE NCU 1760, Equipment Manual

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7.9.6 Disconnecting stations from the PROFIBUS
Removing the bus connector
You can remove the bus connector with a looped-through bus cable from the PROFIBUS DP
interface at any time without interrupting data traffic on the bus.
NOTICE
Data exchange on the bus can be interrupted!
A bus segment must always be terminated with the terminating resistor at both ends. This is
not the case, for example, if the last node with a bus connector is de-energized. Because the
bus connector takes its voltage from the node, this terminating resistor is ineffective.
Make sure that the nodes at which the terminating resistor is connected are always energized.
7.10 Digital inputs/outputs
7.10.1 DIO application
Connecting sensors and actuators
Digital inputs and outputs can be used to connect various sensors and actuators to the 14-pin
connectors X122 / X132 / X142 on the front panel. The interfaces are permanently assigned:
● X122 and X132: Drive
● X142: Control.
The following types of digital I/O are used:
● Digital inputs (isolated)
● Digital outputs
● Bidirectional digital inputs/outputs (only for drive terminals)
The assignment of I/Os to functions can be parameterized freely by the user. Special functions,
such as probe inputs (rapid inputs only) and cam outputs, can also be assigned to the inputs/
outputs.
Connecting
7.10 Digital inputs/outputs
NCU 1760
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Equipment Manual, 02/2020, A5E45627861B AB