AN1661 Freescale Semiconductor / Motorola, AN1661 Datasheet - Page 8

• Manufacturer Part Number: AN1661
• Description: Low Cost Universal Motor Chopper Drive System
• Manufacturer: Freescale Semiconductor / Motorola

Application Note
8
END OF CONTROL BLOCK
FOR PI
DEMO TABLE HANDLER
TIME
MAKE_PI
A DIP switch with three connected switches (refer to
available on the board. One of the switches (2) is tested by the
discussed software and two are free for customer use (1 and 3). The
control block tests the switch number 2. This switch toggles between
demo mode and start/stop mode.
In demo mode, the drive starts automatically and runs in a 3-step
endless loop. In start/stop mode, the external START command and the
analog external speed command are necessary.
RTS
Freescale Semiconductor, Inc.
For More Information On This Product,
DEMO SWITCH OFF
Figure 5. Program State Diagram
RTS
DEMO CYCLE
TIME FOR
Go to: www.freescale.com
RAMPE
ON — START/STOP MODE
RUN APPLICATION
CONTROL BLOCK
INITIALIZATION
RAMPE
Figure 6. DIP Switch SW1
DONE
RESET
RTS
PUSH-START
DEMO SWITCH
WATCHDOG
DONE
TIME FOR
ON
TEST START BUTTON
PUSH
NOT CONNECTED
AVAILABLE
OFF — DEMO CYCLE
AVAILABLE
WATCHDOG
UPDATED
MOTOR STOP
UPDATED
Figure
6) is
MOTOROLA
AN1661