Measurement-computing DAC488 v.1 Manuel d'utilisateur télécharger pdf (Page 38)

32 DAC488 Operation DAC488 User’s Manual

Digital I/O Port

The digital I/O port on the DAC488 may be used to read eight TTL level inputs and control eight TTL level

outputs. The digital output port may also be configured for high voltage/high current operation. Once the

output port is configured for high level operation, the output can control relays and other high level devices.

One use of the high level outputs may be to energize a relay under program control. The following

Standard and CE diagrams each show how a digital output line can control a relay which in turn, connects

the DAC Port 4 output voltage to an external volt controlled device. The Digital Output (

) command

would then be used to control the relay. Sending the command

D0X

will energize the relay and a

D8X

will

deenergize the relay.

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Measurement-computing DAC488 v.1 Manuel d'utilisateur Page 38