Varec 8315 Series manual Hardware Block Diagram, Motherboard Description

Hardware TankGate Interface

2.1Hardware 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

Tank Gauge

Interface Circuitry

NOVRAM 128 K

PROM 256 k

Serial 1

uP

Serial 0

COM 1

RS-232/RS-485

COM 0

RS-232

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.

2.2Motherboard 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

6 Installation and Operations Manual