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Hardware TankGate Interface
6 Installation and Operations Manual
2.1 Hardware Block Diagram
A TankGate hardware functional block diagram is shown below. This diagram shows the
relationship between major subsystems and components in the TankGate.
Figure 2-2: TankGate functional block diagram
The heart of the TankGate is an Intel 80C188EB microprocessor operating at 18.432
MHz. Designed specifically for real-time embedded applications, the µP includes timer/
counters, an interrupt controller, and chip-select circuitry. It also includes 2 serial
channels that are designated as COM0 and COM1.
2.2 Motherboard Description
The motherboard description is broken into three sections. Each section identifies the
location of the components on the motherboard. When necessary, a brief description of
the component is provided. These sections are listed below:
• Power Supply
• Switches and Indicators
COM 0
COM 1
RS-232
RS-232/RS-485
128 K
256 k
uP
Serial 0
Serial 1
PROM
Tank Gauge
Interface Circuitry
NOVRAM