Hardware Manual

Hardware Manual PCD 1 / PCD 2 Series│Document 26 / 737│Edition EN 15│2008-07-22

Saia-Burgess Controls AG

Installation and addressing of PCD2 I/O modules

CPUs and expansion housings

3

3.7 Installation and addressing of PCD2 I/O modules

3.7.1 Insertion of I/O modules

The I/O module is inserted from the side, pushed towards the middle of the unit until it

reaches the end stop, and snapped into the retaining catch.

Retaining catch Bus connector

When the power is switched on, no operations (such as moving jumpers or

(un)plugging I/O modules) should be attempted.

3.7.2 Address and terminal designation

Cover of PCD2

LED display of status

I/O function name *)

I/O module name

I/O-module

Terminal numbers

Function mnemonics

and relative I/O-address

9 87 6 5 4 3 2 1 0

*) All PCD1/PCD2 units are suitably labelled

Removing the cover gives access to terminals, but also exposes components that are

sensitive to electrostatic discharges.