3.22EjemploDRM007 Co..

Operational Description
User Interfaces
2.4 User Interfaces
The BLDC board user interface consists of a 16 x 2 line character liquid
crystal display (LCD), a LCD contrast potentiometer, a reset switch, a
jumper, two push buttons, a slide switch, an indicator light-emitting diode
(LED), and an optoisolated RS-232 interface.
• D21: PWR ON — D21, labeled PWR ON, illuminates when power
is applied to the board.
• JP1 — Jumper JP1 is a 3-position jumper header. When shorted
between position 1 and 2 the microcontroller is set to enter the
HC08 monitor mode. For more detailed information, refer to the
MC68HC908MR8 Technical Data (Motorola document order
number MC68HC908MR8/D).
• LCD — A 16 characters per 2 lines liquid crystal display.
• S5 — S5 is a slide switch located on the top-right side of the board.
It is used to select between external or internal input of power for
15 Vdc and 5 Vdc power supplies.
• S1: RESET — S1, the RESET switch, is a push button located
near the right border of the board. It resets the microcontroller of
the board.
• S2: OPTIONS — Push-button labeled OPTIONS scrolls all the
washing machine cycles programmed.
• S3: ENTER — Push-button labeled ENTER selects the options
showed in the LCD.
• J5 — An Optoisolated RS-232 interface, for monitor mode
communication with a host computer, is available via DB-9
connector J5.
After turning on the board, when the board is programmed with code
version “BLDC CODE V1.s19”, the first message displayed on the LCD
is “BLDC WASH”.
BLDC Motor Control Board for Industrial and Appliance Applications
DRM007
MOTOROLA Operational Description 39