7 |
PLC Fault Table Descriptions
PLC Fault | User Action |
|
|
Backplane communications with PLC fault; | User Action: Check to make sure you are not sending |
lost request | COMMREQs faster than the Ethernet Interface can |
| process them. If problem persists, contact GE Fanuc |
| Automation - NA. |
|
|
Bad local application request; discarded | User Action: Check for valid COMMREQ command |
request | code. If problem persists, contact GE Fanuc Automation - |
| NA. |
|
|
Bad remote application request; discarded | User Action: Try to validate the operation of the remote |
request | node. If problem persists, contact GE Fanuc Automation - |
| NA. |
|
|
Can’t locate remote node; discarded request | Error reported when message received where IP/MAC |
| address cannot be resolved. Error may indicate that |
| remote host is not operational on the network. |
| User Action: Check that remote host is operational on |
| network and its addresses are correct. |
|
|
Comm_req - Bad task ID programmed | Message from PLC for unknown Ethernet Interface task. |
| User Action: Check COMMREQ function block. |
|
|
Comm_req - Wait mode not allowed | User Action: Check COMMREQ to make sure sent in no- |
| wait mode. |
|
|
Config’d gateway addr bad; can’t talk off local | Error in configuration. Verify IP address, Subnetwork |
net | Mask, and default Gateway IP address are |
| correct. |
|
|
Connection to remote node failed; resuming | Underlying communications software detects error |
without it | transferring data; resuming. If persistent error, |
| check connection to LAN and operation of remote node. |
|
|
LAN controller fault; restart LAN I/F | User Action: HW fault, perform power cycle. If problem |
| persists, contact GE Fanuc Automation - NA. |
|
|
LAN controller Tx underflow; attempt | Internal system error. User Action: If problem |
recovery | persists, contact GE Fanuc Automation - NA. |
|
|
LAN controller underrun/overrun; resuming | Internal system error. User Action: If problem |
| persists, contact GE Fanuc Automation - NA. |
|
|
LAN data memory exhausted - check parms; | The Ethernet Interface does not have free memory |
resuming | to process communications. User Action: If |
| problem persists, contact GE Fanuc Automation - NA. |
|
|
LAN duplicate MAC Address; resuming | A frame was received in which the source MAC |
| Address was the same as this station’s MAC Address. All |
| stations on a network must have a unique MAC address. |
| Immediately isolate the offending station; it may be |
| necessary to turn it off or disconnect it from the network. |
| This station remains Online unless you intervene to take it |
| Offline. |
|
|
LAN controller fuse blown; off network | (Series |
| 30 CPU364) The network port fuse is blown; port is |
| unusable. Isolate and correct the cause of the problem, |
| then replace the fuse or the Ethernet Interface. |
|
|
Chapter 7 Troubleshooting |
