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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 (see explanation: 2.3.4 How to use the isolated
input/output).
Input 6 differs from the other inputs in a way that it has a
special purpose. Input 6 can be used as an interrupt input
either level or edge sensitive.
All inputs and outputs are TTL level compatible.
•
input current 6.3 mA < Ion < 10 mA
•
Pmax 20 mW
•
output current 0.9 mA < Ion < 18 mA, Vce max 40 volt
LED 1
1
Output
LED 3
Figure 2-3: 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!)
2005-12-12
LED 2
Input
1
LED 4
DIGITAL I/O
PIN
INPUT
1
Input 1(p)
2
Input 2(p)
3
Input 3(p)
Input 4(p)
4
5
Input 5(p)
6
Return input 1..5(n)
7
Input 6(p)
8
Return input 6(n)
(p/n see: 2.3.4 How to use the isolated input/output)
Note: The common grounds of the outputs are clustered in
two groups of three outputs. Five input common grounds
are clustered.
PIN
OUTPUT
1
Return output 4..6(n)
2
Output 6(p)
3
Output 5(p)
4
Output 4(p)
5
Return output 1..3(n)
6
Output 3(p)
7
Output 2(p)
8
Output 1(p)
Page 7
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