750-00004 Parallax Inc, 750-00004 Datasheet - Page 16

• Manufacturer Part Number: 750-00004
• Description: POWER SUPPLY 24VDC 600MA
• Manufacturer: Parallax Inc

Specifications of 750-00004

• Form: Wall Mount (2 Prong)
• Voltage - Output Per Connector: 24VDC
• Current - Output: 600mA
• Polarization: Positive Center
• Cord Plug: 2.1mm I.D. x 5.5mm O.D. x 12mm Female
• Voltage - Input: 120VAC
• Power - Output: 14W
• Transformer Type: Linear, Unregulated
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Efficiency: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

Serial Communications
Once your program is loaded and running, you are free to use the serial port for "run-time"
communications. Each Stamp has built-in functions, (serin and serout), that allow you to talk to your
Stamp via a PC serial port, or allow the Stamp PLC to talk to other devices with RS-232 style serial ports.
In fact, this port can be used for a variety of useful functions. Here are a few sample programs that show
some of the possibilities.
Status Reporting
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Parallax, Inc. • Stamp PLC (#30064) • Version 1.8 • 12/29/2003
ENDSELECT
' adjust adcRaw for selected resolution
'
IF (adcRes < 12) THEN
ENDIF
RETURN
CASE AdcBP5
CASE AdcUP10
CASE AdcBP10
CASE Adc420
adcRaw = adcRaw >> (12 - adcRes)
File....... Stamp PLC_Report.BS2
Purpose.... Typical PLC application whereby this unit listens for
Author..... Parallax, Inc.
E-mail..... [e-mail]
Started.... 26 JUN 2003
Updated.... 26 JUN 2003
{$STAMP BS2}
{$PBASIC 2.5}
IF (adcRaw < 2048) THEN
ELSE
ENDIF
mVolts = 2 * adcRaw + (adcRaw ** $7100)
IF (adcRaw < 2048) THEN
ELSE
ENDIF
mVolts = 5 * adcRaw + (adcRaw ** $1666)
mVolts = 2 * adcRaw + (adcRaw ** $7100) ' x 2.4414
adcRaw = 4095 - adcRaw
mVolts = -(2 * adcRaw + (adcRaw ** $7100))
mVolts = 4 * adcRaw + (adcRaw ** $E1FF)
adcRaw = 4095 - adcRaw
mVolts = -(4 * adcRaw + (adcRaw ** $E1FF))
serial commands from a host controller.
' x 2.4414
' -- 4000 to 20000
' x 5.0875
' reduce resolution
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