User`s manual

Chapter 3 Function and Operation
3-44
Test input port, red light means open, and green light means closed; the system will prompt name of the port
at the same time; the output port is closed if it is not selected, and is open if selected; the system will prompt the
name of the port, as shown in Figure 3.2.4.5.2.
Press F2 to enter Output port diagnosis interface to test output functions, in which red light means open,
yellow light means selected, and green light means closed. The system will prompt the name of the port when a
port is selected (corresponding to I/O setting above).
Keyboard Test
Press F3 to enter Keyboard testing interface, as shown in the figure below:
Figure 3.2.4.6.3 Keyboard test
Once you press a key, it will be displayed in this interface and the corresponding key in the interface will
become red; when you release that key, the corresponding key in the interface will become light green. If no
response in the interface when you press a key, it means this key is not functioning. Press F10 or STOP to exit
keyboard testing.
Basic operation of system diagnosis:
The system diagnosis displays the open hardware resources in the system. In System diagnosis screen, you
can check the following interfaces:
1) Output detection: press ←↑→↓keys to move the cursor any position of the optical isolation output.