Installation guide

Installation

890USE17100 September 2003

Interlocking Base Units on the DIN Rail

The Backplane of

the Island Bus

After the NIM has been attached to the DIN rail, attach the proper sequence of

interconnected base units. Start directly to the right of the NIM with a PDM base unit,

followed by a series of I/O base units. Base units are installed from left to right along

the rail. These base units together with the NIM will form the backplane for the

primary segment of the island.

The following illustration points out features important in connecting base units to the

DIN rail.

1 Interlocking channels

2 Electrodes

3 Electrode channels

4 DIN rail latch

Note: If your plan includes keying the module to their base connections (See How

to Key the I/O Module to Base Connection, p. 46), remove any break-off pins from

the bases before installing them on the DIN rail.

1 1

2 3