User`s manual

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EX7000-OEM Web Page Operation 37
SECTION 5
THEORY OF OPERATION
INTRODUCTION
This section expands on the description of the EX7000-OEMs features and explains how to best
use them. A functional block diagram is provided below.
F
IGURE 5-1: FUNCTIONAL BLOCK DIAGRAM
SYSTEM OVERVIEW
Using the drivers provided with the EX7000-OEM, commands are issued from the host PC to the
Digital Controller Board (DCB). The DCB, in turn, controls the operation of the Relay Driver
Boards (RDBs). Up to eight RDBs can be controlled by one DCB, making the EX7000-OEM
capable of providing up to 576 relay control driver, 96 high-current drivers, and 256 parallel I/O
ports. This is illustrated in
Figure 5-1.When multiple RDBs exist in an EX7000-OEM system, a
rotary switch on the RDB is used to set a unique address for each RDB.