M.9.2 Checking whether the DIO interfaces of the Display turn ON/OFF properly

Check if the input and output operate normally

Check whether the device connected to the DIO board performs input/output operations properly in order to determine whether the problem is in the display unit or not.

1. Go to offline mode and touch [Peripheral Settings] on the item changeover switch.

2. [Peripheral Settings] screen opens. Touch [I/O Driver] and then [DIO Driver].

3. [I/O Driver] screen opens. Touch [I/O Monitor].

4. Select the type of I/O data, either [Bit] or [Word]. (Example, select bit for both input and output)
   

5. The input/output bit display screen opens. [Input] indicates the current ON/OFF status. [Output] toggles the status between ON and OFF. If the device connected to the DIO board performs properly, check the settings of the project file on GP-Pro EX. If the connected device does not operate normally, check the wiring between the display unit and the connected device, and then check the following items.
   

Checking the internal terminals

You need to prepare a loopback cable to check the internal terminals.

Prepare the loopback cable according to the following instructions.

Preparing the loopback cable

The wiring of the loopback cable is as follows:

• Sink type

Example, to check three terminals at a time, IN0 through IN2 on OUT0, and IN3 through IN5 on OUT1

• Source type

Example, to check three terminals at a time, IN0 through IN2 on OUT0, and IN3 through IN5 on OUT1

I/O Check

Connect the loopback cable to the DIO board, send data from the two output terminals to the six input terminals, and compare the input and output data. When the data matches with the expected value, [OK] is displayed on the screen. When the data does not match with the expected value, [NG] is displayed.

1. Go to offline mode and touch [Peripheral Settings] on the item changeover switch.

2. [Peripheral Settings] screen opens. Touch [I/O Driver].

3. [I/O Driver] screen opens. Touch [I/O Check].

4. [I/O Check] screen opens. Touch [Start].
   

5. The connection check execution screen is displayed. When the connection is valid, [OK] is displayed. When there is a problem, [NG] is displayed. [OK] indicates you should check whether the device connected to the DIO board is operating properly or the cable is correct. [NG] indicates the display unit may be faulty. Please contact the Pro-face customer care center.