Rockwell Automation GMLC Reference Manual - Manual (Page 587)

Publication GMLC-5.2 - November 1999
550 Fault Variables
If recycling power or executing a Reset CNET Fault block (as described
above) fails to clear this fault, the plug card is defective and must be
repaired or replaced.
This fault condition does not appear as an independent fault variable in
either the Tag Window or the Expression Builder.
Incorrect Node Configuration
A CNET Incorrect Node Configuration fault (CNET_fault_code = 1)
occurs if multiple nodes on the ControlNet network are set to the same
Media Access Control ID (in the CNET page of the Configure Control
Options dialog box). This fault occurs during CNET initialization.
When CNET_fault_code = 1, Global_fault = 16, CNET_fault = 1,
CNET_status = 3 and the affected CNET plug card LED is flashing red.
If a cable is connected to the network access port (NAP) of the CNET
plug card, the state of the LEDs is meaningless.
To clear this fault, either:
• Recycle power to the CNET plug card, or
• Fix the MAC ID configuration problem. Then execute a Reset CNET
Fault block, set to Type All Faults, as a Direct Command from the
Select Direct Command Window on the Online Toolbar. Executing a
Reset CNET Fault block, set to Type All Faults, will reset the
variables CNET_fault_code and CNET_status to 0.
This fault condition does not appear as an independent fault variable in
either the Tag Window or the Expression Builder.
DH-485 Fault Code
DH485_fault_code is an integer value representing the fault status of the
most recent DH-485 transaction initiated by the motion controller, as
shown in the table below.