User`s manual

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EX7000 Series Theory of Operation 49
SECTION 5
THEORY OF OPERATION
INTRODUCTION
This section expands on the description of the internal operation of the EX7000 and explains how
to best use them. A full understanding of this operation is not required to operate and use the
EX7000. A functional block diagram is provided below.
F
IGURE 5-1: FUNCTIONAL BLOCK DIAGRAM
SYSTEM OVERVIEW
Using the drivers provided with the EX7000, commands are issued from the host PC to the DCB.
The DCB, in turn, controls the operation of the RDBs. Up to eight RDBs can be controlled by one
DCB, making the EX7000 capable of providing up to 576 high-current relay control drivers,
96 very high-current drivers, and 256 parallel I/O ports. This is illustrated in Figure 5-1.When
multiple RDBs exist in an EX7000 system, a rotary switch on the RDB is used to set a unique
address for each RDB.