System information

C0240111-06-07-GB
91
9 CONNECTING SEVERAL BOARDS
Caution: , perform the following operations before touching the boards in order to prevent
electrostatic discharge:
• wear the bracelet (connected to the earth circuit) and the heel strap
• the board should be closed inside an antistatic bag protecting it from electrostatic
discharge: remove it from the bag and place it on the light-blue mat with the yellow
edge or on the dark-blue mat.
• You can now work on the board.
Several boards can be connected together.
There are two connection types: “base-expansion” on the expansion serial line and “master-slave” on the
“plan” serial line. The “mixed” connection is a combination of the other two.
9.1 “BASE-EXPANSION” Connection
In the “base-expansion” connection, the entire intelligence of the unit resides in the base. The connected
expansions are exclusively used as additional I/O. The boards must be connected together with a three-
wire shielded cable connected from terminal J23 of the base to terminal J3 of expansion “E” or to
terminal J11 of expansion “M” (see figure below).
“W3000 exp” software must be installed in expansion ”M” while no software application is required for
expansion “E”.
Base Expansion E Expansion E Expansion E
Base Expansion M Expansion E
Figure 9.1: “base-expansion” connection
A certain number of expansions are present depending on the type of boards and the enabled functions.
A specific address must be given for each expansion.