Kontron CP384 - Manual (Page 22)

Kontron Modular Computers GmbH ID 31440, Rev. 01
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Introduction CP384
1.3.1.1 Board Introduction - Digital Input
The digital input cluster consists of 16 input channels. The source of the digital inputs must be
a voltage generator. The board accepts only differential voltages up to a maximum of +30V.
The input current is limited to 5 mA over the specified input voltage range.
Input signal processing begins with the presentation of the signal to the front panel connector.
Signal conditioning prior to the signal reaching the DIO ProComm Controller includes: overvolt-
age protection, ESD, low-pass filtering, inverse polarity protection, defined low and high rang-
es, current limitation, optoisolation and buffering.
After signal conditioning, all parallel digital data is routed to the DIO ProComm Controller,
where the control and status registers are set.
The DIO ProComm Controller controls the interface with the CompactPCI bus and the dedicat-
ed software.
Input signal types and ranges are as follows:
• Edge frequency:
• Maximum 10 kHz
• Voltage Ranges:
• High range: +11V to +30V (+24V nominal)
• Low range: -3V to +5V
• Channel isolation
• The input channels are isolated from the system side and do not share common GND
or VCC.
• Differential input
Output data :
The following outputs are routed from the DIO ProComm Controller to the CompactPCI bus:
• Input data for all channels as a 32-bit value (each bit from 0 - 15 represents the status of
the respective input channel)
• Flag set information from the control and status registers
• Interrupts
1.3.1.2 Board Introduction - Digital Output
The digital output clusters consist of 8 output channels. The digital output requests from the
system controller are processed accordingly by the DIO ProComm Controller and are then rout-
ed to the relay drivers which switch the relays on or off using the external supply voltage as the
relay coil power source.
An external input can be provided to simultaneously switch off all of the relays in the cluster and
to connect Com (common) pin with NC (normally connected) pin on all of the relays. The same
operation may be done using the internal reset signal generated by the system side.
This reset can be used by the application to keep the inputs low after a fault condition occurs.