Advantech PCI-1710HGU Manuel d'utilisateur télécharger pdf (Page 33)

27 Chapter 3

Fig. 3-3 shows how to make analog output and external reference input

connections on the PCI-1710U/1710HGU.

Figure 3.3: Analog Output Connections

3.3.3 Digital Signal Connections

The PCI-1710U/HGU has 16 digital input and 16 digital output channels.

The digital I/O levels are TTL compatible. The following figure shows

connections to exchange digital signals with other TTL devices:

To receive an OPEN/SHORT signal from a switch or relay, add a pull-up

resistor to ensure that the input is held at a high level when the contacts

are open.

D.GND

TTL Devices

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Advantech PCI-1710HGU Manuel d'utilisateur Page 33