I/O-Bus Addressing

A device address on the I/O-Bus includes the following elements:

Bus number, Drop number, Module ID, Node ID

The following example depicts an I/O-Bus with a single sub-branch.

NOTE:

  • You can use the 170 BNO 6x1 00 branching module to create sub-branches 1-level deep off of the I/O-Bus main branch.

  • You cannot use a branching module to create a sub-branch off of a sub-branch.

  • You cannot use the 170 BNO 6x1 00 branching module to enable and disable remote I/O-Bus branches created by inserting a branching module onto the I/O-Bus.

Item

Addressing Element

Description

1

Bus number

The I/O-Bus number is a read-only setting assigned by Control Expert.

NOTE: The Momentum Bus is number 0.

2

Topological address

Also known as the ‘drop number’, Control Expert assigns a default setting equal to the lowest available number from 1...32. This read-write setting is editable in the New Device window and in the I/O-Bus window.

3

Module number

The sequential number of the module on the drop–a read-only setting assigned by Control Expert.

4

Node ID

The sequential number of the module on the entire I/O-Bus–a read-only setting assigned by Control Expert.