User’s Manual 3
Table of Contents
Table of ContentsSafety Precautions ............................................................................................................ 1
About This Manual ............................................................................................................ 2
Part 1 8 Channel Analog Input Module AD2681. Introduction …………….……………………………………………………………….… 8
1.1 AD268 functions ............………………..…………………….………………………… 8
1.2 External features …......…………………………………………………………………. 9
2. Specifications ….………………………………………………………………………... 10
2.1 Specifications .................…………….……………………………………………….. 10
2.2 Internal block diagram ………….......………………………………………………… 11
3. Input Type Setting ….........……………………………………………………………... 12
3.1 Jumper plug setting ........…………….……………………………………………….. 12
3.2 Parameter setting by software ….....………...……………………………………… 13
4. Wiring ………………..…………………………………………………………………… 14
4.1 Terminal arrangement …….......…………..…………………………………………. 14
4.2 Signal wiring …..………………………………………………………………………. 15
4.3 Wiring precautions ………...…………………………………………………………. 16
5. I/O Allocation and Programming …………………………………………………… 17
5.1 Allocation to the T2 registers ……………..…………………………………………. 17
5.2 A/D conversion data …….......................……………………………………………. 18
5.3 Programming ……................................……………………………………………. 23
6. Parameters ……..................…......…………………………………………………… 24
6.1 Memory map …...........………………………………………………………………… 24
6.2 Parameter setting procedure ….........……..………………………………………… 30
6.3 Sample program f or setting the parameters …..………………………………..… 31
7. Troubleshooting ….…....……………………………………………………………… 32
7.1 RAS information ……...............…........……………………………………………… 32
7.2 Troubleshooting ................................................................................................. 33
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