User`s manual

170 BNO 681 00
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Electrical Functions of the Branch interface module 170 BNO 681 00
Supply The supply voltage is UB = 24 VDC.
The logical supply (VCC = 5 VDC) is created from the 24 VDC. It is monitored. If the
voltage is in the tolerance range, a green LED will be switched on (ready). If the
voltage falls outside tolerance, a reset will be triggered.
Interfaces The bus terminal has three INTERBUS interfaces. The incoming and outgoing
interfaces are designed for the connection of fiber optic cables. The remote bus
branch is connected using a 9 pin DSUB plug. This interface is suitable for the use
of OPTOSUB.
The user of the module must establish decide if it is the last node at the remote bus,
using an end identification slide switch.
Peripheral
Signals
The terminals of the terminal block include a reconfiguration button, with which the
remote bus branch can be reconnected.
A relay output is also available, which can indicate an error at the remote bus
branch. The relay contacts are change over contacts.