Function groups 21
Manual ADQ-22/23-Serie Rev. 1.1
Function groups
Fig. 10: Wiring of the digital inputs/outputs
3.4.2 Programming
The bidirectional 8 bit digital I/O ports (DIO_x) can be programmed port by port as input or
output. After switching on the supply, all ports are switched to input.
3.4.2.1 Single value input/output
In this operating mode, you can read in or output a digital value port by port. The port direction
is defined by the software.
Note: A port configured as an output can also be read back!
Follow the procedure as described in the online help.
3.4.2.2 Streaming operation
Depending on the port direction, the software-controlled streaming operation enables the con-
tinuous reading of the digital inputs or the output of a bit pattern stream up to 1 kS/s.
Follow the procedure as described in the online help.
3.5 Relay
The actual current carrying capacity of the relays depends on several factors. The sum of the
resistances per channel (connector, conductor track, relay contact) is typically 200 mΩ (max.
250 mΩ). This results in a power loss of 0.2 W/channel.
Note
:
Always select sufficiently dimensioned cable cross-sections for the connection.
E.g. 0.14 mm
2
to 1 A. Suitable connection cables can be found on page 32.
