EA9777-3

Page 12

ELECTRONIC ASSEMBLY reserves

the right to change specifications

without prior notice. Printing and

typographical

errors

reserved.

TROUBLESHOOTING

- Display not flashing:

Please check the power supply. The LED (Power-LED), placed on the lower right corner has

to glow green. If you supply with USB the solder bridge “Select power“ must be positioned on

the left and the driver for Windows must be installed. If you supply externally, please set the

solder bridge to the right.

- No connection to USB:

Check the installation of the USB-driver, with the help of device manager of Windows. In

addition make sure, that no board of the Port-Expansion (EA 9777-2PE) adaptors are

mounted. Please reset the display after removing the adaptor-board.

- No connectin to RS232 (+/-12V):

Please check if you have installed the adaptor-board of Interface Expansion EA 9777-2PE

correctly and reset the display. Also check the wiring of RS232 between your PC and the board

EA 9777-3USB. There is a interface cable available under ordering code EA KV24-9B. It

allows a direct connection to a PC. The length of the cable is 1.5m. If there is still a problem,

please have a look on the DIP-Switches, which set the baudrate and adress. It’s

recommended to use the defaults. Further information you will find on pages 10 and 11.

- No connection to RS232 (CMOS):

Please check if you have installed the adaptor-board of Interface Expansion EA 9777-2PE

correctly and reset the display. Also check the wiring of RS232 between your controller and

the board EA 9777-3USB. If there is still a problem, please have a look on the DIP-Switches,

which set the baudrate and adress. It’s recommended to use the defaults. Further information

can be found on pages 10 and 11.

- No connection to RS485 (CMOS):

Please check if you have installed the adaptor-board of Interface Expansion EA 9777-2PE

correctly and reset the display. Also check the wiring of RS485 between your controller, the

other stations and the board EA 9777-3USB. If there is still a problem, please have a look on

the DIP-Switches, which set the baudrate and adress. It’s recommended to use the defaults.

Further information can be found on pages 10 and 11.

- No connection to SPI:

Please check if you have installed the adaptor-board of Interface Expansion EA 9777-2PE

correctly and reset the display. Also check the wiring of SPI between your controller, the other

stations and the board EA 9777-3USB. If there is still a problem, please have a look on the DIP-

Switches, which set the baudrate and adress. It’s recommanded to use the defaults. Further

information can be found on page 11.

- No connection to I²C:

Please check if you have installed the adaptor-board of Interface Expansion EA 9777-2PE

correctly and reset the display. Also check the wiring of I²C between your controller, the other

stations and the board EA 9777-3USB. If there is still a problem, please have a look on the DIP-

Switches, which set the baudrate and adress. It’s recommended to use the defaults. Further

information can be found on page 11.