Advantech PCI-1720 Manuel d'utilisateur télécharger pdf (Page 24)

20 PCI-1720 User's Manual

D11 ~ D0 Digital to Analog data

D0 is the LSB (Least Significant Bit) and D11 is the MSB (Most

Significant Bit) of the D/A data.

Note!: To write D/A data, write the low byte first, then write

the high byte.

4.2.2 D/A Voltage Range and Polarity

The read-writable register of BASE + 8 allows users to set the D/A

voltage range and polarity.

Table 4-3: Register for D/A voltage range and polarity

Table 4-4: Output range of D/A channel n

* n = 0,1,2,3.

DAn_U/B DAn_5/10 D/A channel n output range

00 0 to +5 V

01 0 to +10 V

1 0 -5 to +5 V

11 -10 to +10

Base

Address

+ decimal

Data

Function description R/W

76543210

DA3_

U/B

DA3_

5/10

DA2_

U/B

DA2_

5/10

DA1_

U/B

DA1_

5/10

DA0_

U/B

DA0_

5/10

D/A voltage range

and polarity

R/W

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 35 36

PCI-1720 1
4-channel Isolated D/A 1
Output Card 1
User's manual 1
Copyright 2
Acknowledgments 2
CE notification 2
On-line Technical Support 2
Contents 3
General Information 5
1.1 Introduction 6
1.2 Features 6
1.3 Applications 7
1.4 Specifications 7
Power consumption 8
Physical 8
Environment 8
1.5 Block Diagram 9
6 PCI-1720 User's Manual 10
Installation 11
2.1 Initial Inspection 12
2.2 Unpacking 12
2.3 Installation Instructions 13
Jumpers and 15
I/O Connectors 15
3.1 Jumper Settings 16
JP1 to JP4 17
Keeps last status after reset 18
Loads default while reset 18
Register Structure 21
4.1 Overview 22
4.2 I/O Port Address Map 22
00 0 to +5 V 24
01 0 to +10 V 24
1 0 -5 to +5 V 24
11 -10 to +10 24
Signal Connections 27
5.1 Overview 28
5.3 Current Sink Connections 29
Internal Side External Side 30
Calibration 33
A.1 Overview 34
Appendix A Calibration 31 35
A.4 Current Sink Calibration 36

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