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VCM-DAS-3 Datasheet(PDF) 30 Page - List of Unclassifed Manufacturers

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
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Manufacturer  ETC2 [List of Unclassifed Manufacturers]
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VCM-DAS-3 Datasheet(HTML) 30 Page - List of Unclassifed Manufacturers

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Analog Output Data Registers
VCM-DAS-3 Reference Manual
25
DAC WRITE REGISTERS
DACHI (Write) 0301h
7
6
5
4
3
2
1
0
–
–
–
–
DA11
DA10
DA9
DA8
DACLO (Write) 0300h
7
6
5
4
3
2
1
0
DA7
DA6
DA5
DA4
DA3
DA4
DA1
DA0
Table 16: DACHI Bit Assignments
Bit
Mnemonic
Description
7-4
–
Unused. These bits have no function.
3-0
DACHI
Analog Output Data MSB – Digital-to-analog data bits DA11-DA8. DA11 is
the most significant bit. This register is used with the DACLO register to form
the 12-bit analog output value.
Table 17: DACLO Bit Assignments
Bit
Mnemonic
Description
7-0
DACLO
Analog Output DATA LSB – Digital-to-analog data bits DA7-DA0. DA0 is the
least significant bit. This register is used with the DACHI register to form the
12-bit analog output value.
DAC READ REGISTERS
DACALL1 (Read) 0301h
7
6
5
4
3
2
1
0
–
–
–
–
DA11
DA10
DA9
DA8
DACALL0 (Read) 0300h
7
6
5
4
3
2
1
0
DA7
DA6
DA5
DA4
DA3
DA4
DA1
DA0
Reading from these locations updates all DACs to the values written to them. Only DACs with
new data written to them will change. The remaining channels will retain their current values.



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