7. Increasing the system's hardware resources
To increase the number of channels, multiple interface cards can be connected on the COM
3 (RS485) peripheral interface. Interface cards are available for analogue inputs and outputs
(ANA-D) as well as for binary inputs and outputs (BIN-D). It is also possible to communicate
directly with other devices through the COM3/Modbus converter.
7.1 Additional inputs and outputs
The ANA-D interface card can be supplied with either eight analogue inputs or eight ana-
logue outputs. It is not possible to combine inputs and outputs on one card.
Figure 9: Hardware extension via ANA-D
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