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5-24 TCP/IP Ethernet Communications for the Series 90™ PLC User's Manual
–
May 2002 GFK-1541B
5
Exchange Status Word Error Codes
The following table shows the error codes that can be written to the Exchange Status word.
Value
(Dec.)
Produced /
Consumed
Error Description
0P/C
No new status
event has
occurred.
Produced: Initial value until the first producer period refresh occurs.
Consumed: The data has not been refreshed since the previous
consumption scan and the consumer timeout has not expired.
1P
No error
currently exists.
The exchange is producing data.
1C
No error, data
consumed.
The data has been refreshed on schedule since the previous
consumption.
3C
SNTP error.
. The Ethernet Interface in the producer is configured for network time
synchronization, but is not synchronized to an SNTP server. The data
has been refreshed on schedule.
4P/C
Specification
error.
Produced: During exchange configuration*, an invalid configuration
parameter was received by the Ethernet Interface or an error occurred in
communication with the PLC CPU.
Consumed: Same as Produced, or the size of a received packet for this
exchange definition did not match the expected size.
6C
Refresh timeout
without data.
The exchange’s timeout period is configured to a non-zero value and the
data has not been refreshed within the timeout period.
7C
Data after
refresh timeout.
The data has been refreshed since the previous consumption, but was
not refreshed within the timeout period.
10 P/C
IP Layer not
currently
initialized.
This status can be set during exchange configuration* if the Ethernet
Interface detects that it cannot currently access a network (cable not
connected, hardware failure, etc.) This is a temporary status that may
change if successful network access becomes possible.
12 P/C
Lack of
resource error.
Local resources are not available to establish the exchange. This error
can only occur during exchange configuration*. The PLC Fault Table
should be examined to obtain more detail on the specific error.
16 P
Name
Resolution in
progress.
A local produced exchange definition has specified a name for the
consumer address and the local Ethernet Interface is awaiting a response
from a remote name server following exchange configuration*. This is a
temporary status that will change when the name resolution completes. If
successful, the status will become 0 (No New Data); if unsuccessful, the
status will become 4 (Specification Error).
18 P/C
Loss of Ethernet
Interface error.
This error can occur if the CPU no longer recognizes the Ethernet
Interface within the PLC rack. A loss of module PLC Fault Table entry will
also be present. The error can also occur if the module in the given slot of
the PLC rack does not match the module specified in the configuration
(configuration mismatch).
22 P/C
Ethernet
Interface does
not support
EGD.
The revision level of the Ethernet Interface does not support global data.
26 P/C
No Response
from Ethernet
Interface.
Did not respond to establish exchange request. This fault can only occur
during exchange configuration*.
28 P/C
Failed to create
an exchange.
An error occurred (other than a resource error, no response or loss of
Ethernet Interface) during exchange configuration*. A PLC Fault Table
entry is provided for additional information about the fault.
* Exchange configuration occurs when either 1) Hardware Configuration containing EGD is
stored to the PLC, 2) a PLC containing EGD configuration powers up, or 3) an Ethernet Interface
configured for EGD is restarted.