LINK Systems OmniLink 5000 - Manual (Page 79)

April 17, 2000 Man ual Revisio n 1.0
9.1
Section 9 Troubleshooting
Section 9.1 Communication Failure
The message "Communication Failure" in the tonnage monitor status line of the Main Operator Terminal
screen indicates that the operator terminal can not establish serial communication with the module.
Since this serial interface is used to communicate will all boards in the OmniLink 5000 card rack, the
problem may be that the display can not communicate with any of the boards. From the Main Menu
select the PRESS CONTROL softkey and check if the Present Running Status of the press control
indicates "Communication Fault". If so, verify that power is applied to the OmniLink 5000 card rack
(check the power supply LEDs). If power appears correct, check the wiring of the five wire cable from
the operator terminal to the power connector module on the card rack.
If loss of communication exists only between the display and the tonnage monitor module, the operator
should turn power to the OmniLink 5000 off, remove the tonnage monitor module, and verify that there
are no bent pins in either connector that plugs into the motherboard of the card rack. Reinstall the card,
making certain that it is securely seated and screwed in, and turn power back on. If the problem
remains, there may be an internal fault on the tonnage monitor module.
Section 9.2 Diagnostic LEDs
The 5000-8A Tonnage Monitor Module has two LED indicators which provide status the following
information:
+5 V This green LED indicates the status of the internal +5 volt power supply used by the "Ch B"
side of the press control. It should be ON when power is applied to the card rack.
RESET This red LED turns ON for approximately 1/2 second when power is applied to the card rack.
It should never turn ON during normal operation, and indicates a fault on the tonnage
monitor module if it does.