Checking the System
Digital I/O Test
The Digital Input/Output test enables you to read data from, or write data to, either
FIGURE 3.8 UDAS SYSCHECK Digital I/O Test
Use the Input and Output radio buttons to select the direction of a port.
The input and output data is displayed in Hexadecimal
Input ports are read and displayed four times per second.
Output data is written to the port only after clicking the Write Output Data button.