Philips INCA 320 User Manual download pdf (Page 10)

The inputs and outputs are not protected in any way, so

care must be taken when connecting anything to these

inputs and/or outputs.

All inputs and outputs are TTL level compatible.

• output current 0.9 mA < Ion < 18 mA, Vce max 40 volt

• Pmax 20 mW

2.3.3 Digital I/O

The Digital Input and Output connectors give the user

the possibility to connect and control a number of devices.

For that purpose 6 output and 6 input lines are available.

These output and input lines are optically isolated from the

Inca.

Input 6 differs from the other inputs in a way that it has a

special purpose. Input 6 can also be used as an interrupt

input that is either level or edge sensitive.

Page 8 2005-12-12

Figure 2-6: Digital input and output connections

Table 2-1: LED control by Rhapsody software

LED 1 green or yellow

LED 2 green or yellow

LED 3 green or yellow

LED 4 green (only!)

DIGITAL I/O

INPUT

Input 4

Input 1

Input 2

Input 6

Input 3

Ground 6

Input 5

Common Ground 1..5

OUTPUT

Output 4

Common 24V 4..6

Output 6

Output 2

Output 5

Output 1

Common 24V 1..3

Output 3

Note: The common 24V lines of the outputs are clustered

in two groups of three outputs. Five input common grounds

are also clustered.

2.3.3.1 Digital Inputs

LED 1

LED 2

The following diagram shows one input.

Common

Ground

Signal In

15V

940

Out

LED 3

LED 4

Figure 2-7: Digital Input

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 23 24

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Philips INCA 320 User Manual Page 10

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