VCM-DAS-3 datasheet(40/42 Pages) ETC2

Part #	VCM-DAS-3

Description	The VCM-DAS-3 is a PC/104-format data acquisition board that provides analog outputs and digital I/O for process control and other applications.

PDF	42 Pages

Scroll/Zoom	100%

Manufacturer	ETC2 [List of Unclassifed Manufacturers]

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Enhanced Mode Operations

VCM-DAS-3 Reference Manual

SETTING A CHANNEL TO SLEEP MODE

To set a DAC to sleep mode, perform a Sleep DAC operation by writing Bh to the CTRL field of

the ENCTRL register at I/O port 0x30A, combined with the channel number in the SEL field of

the same register. The channel remains in sleep mode until a voltage output code is written to it.

READING THE SLEEP STATUS OF A CHANNEL

To read the sleep status of a channel:

1. Perform a Read Span operation by writing 9h to the CTRL field of the ENCTRL register

at I/O port 0x30A, combined with the channel number in the SEL field of the same

2. Read the SLEEPSTAT bit (bit 4) of the ENDATLO register at I/O port 0x308, as shown

below. A value of 0 = awake. A value of 1 = sleep mode.

ENDATLO LSB (Read) 0308h

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SLEEPSTAT

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VCM-DAS-3 Datasheet(PDF) 40 Page - List of Unclassifed Manufacturers