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PCI-1730/1733/1734 User Manual 26

PCI-1733 Pin Assignments

CN1

Isolated Digital Input

Each of the 32 isolated digital input channels accept voltages from 5

to 30 V. Every eight input channels share one external common. (Channels 0 ~ 7 use

ECOM0. Channels 8 ~ 15 use ECOM1. Channels 16 ~ 23 use ECOM2. Channels 24

~ 31 use ECOM3.) The following figure shows how to connect an external input

source to the card's isolated inputs.

Figure 3.8 Isolated Digital Input Connection

Description of pin use:

IDI 0 1 20 IDI 1

IDIn (n=0 ~ 31): IDI 2 2 21 IDI 3

Isolated digital input IDI 4 3 22 IDI 5

ECOM n (n=0 ~ 3): IDI 6 4 23 IDI 7

External common Vcc/GND of IDI ECOM 5 24 IDI 8

EGND: IDI 9 6 25 IDI 10

External ground for IDI IDI 11 7 26 IDI 12

IDI 13 8 27 IDI 14

IDI 15 9 28 ECOM

IDI 16 10 29 IDI17

IDI 18 11 30 IDI19

IDI 20 12 31 IDI21

IDI 22 13 32 IDI23

ECOM 14 33 IDI24

IDI25 15 34 IDI26

IDI27 16 35 IDI28

IDI29 17 36 IDI30

IDI31 18 37 ECOM

EGND 19

ECOM

EGND

Isolated

Circuit

Internal

Wet

contact

Dry

Contact

IDI0

IDI1

External

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 53 54

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