Biamp GPIO-1 Bedienungsanleitung PDF herunterladen (Seite 6)

GPIO-1 SETUP AND USE

Input Connectors

Sixteen parallel input connections are provided on the GPIO-1 as well as Isolated Ground and Ground connections. Under software control

the logic level of each input can be set independently to operate one of three ways.

• TTL: 2V to 5V logic sense. To enable a TTL input, apply a TTL logic high or low with respect to Isolated Ground. This can be

congured in software to detect a low to high or high to low transition.

• High Range: To enable a High Range input, use a dry contact to switch the input to a voltage of 24V DC with respect to Isolated

Ground. This can be congured in software to detect a low to high or high to low transition.

• High Range – Monitored: This circuit is implemented in the same way as the High Range input. This option allows monitoring of each

input for short to ground and open circuit. In order to sense open circuit, a terminating resistor must be tted between each Input and

Isolated Ground at the far end of the circuit being sensed. The Inputs will sense open circuits on the line between its input and the

terminating resistor. Shorts to Isolated Ground are sensed across the entire line being monitored. A 6k8Ω resistor should be used for

each input. If a monitoring fault is detected on any input the logic state or transitions on that input will be ignored until the fault is cleared.

High Range – Monitored inputs require a low to high transition to enable the input (transition direction not congurable).

Pin Label Function

1 Ground

2 1 Input 1

3 2 Input 2

4 Isolated Ground

5 3 Input 3

6 4 Input 4

7 Isolated Ground

8 5 Input 5

9 6 Input 6

10 Isolated Ground

11 7 Input 7

12 8 Input 8

13 Ground

14 9 Input 9

15 10 Input 10

16 Isolated Ground

17 11 Input 11

18 12 Input 12

19 Isolated Ground

20 13 Input 13

21 14 Input 14

22 Isolated Ground

23 15 Input 15

24 16 Input 16

1 2 3 4 5 6 7 8 9 10 11 ... 15 16

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Biamp GPIO-1 Bedienungsanleitung Seite 6