If the application program uses the Exchange Status word to check exchange status, it
must clear this word to 0 once a non-zero value is written to it. That allows the
application program to detect a new exchange status in subsequent sweeps.
The Exchange Status word uses the error codes below to report exchange status. Refer to
the section,
Troubleshooting Common Ethernet Difficulties
later in this chapter.
Value
(Decimal)
Error
Description
0
Exchange status
has not been
updated
Produced: Initial value until the first producer period refresh occurs.
Consumed: The data has not been refreshed and timeout has not
expired.
1
No error
Produced: The produced exchange is producing data.
Consumed: The data has been refreshed on schedule.
3
NTP error
Consumed only: The CPU is configured for network time
synchronization, but is not synchronized. (This feature is supported in
IC200CPUE05-HK and earlier versions only.)
4
Specification
error
Produced and Consumed: Error configuring the exchange. For
CPUE05, this error does NOT indicate a consumed exchange size
miscomparison.
6
Refresh timeout
without data.
Consumed only: The timeout period has expired but data has not
been refreshed from the network.
7
Data after refresh
timeout
Consumed only: The data has been refreshed since the previous
consumption, but was not refreshed within the timeout period.
10
IP connection not
available
Produced and Consumed: The IP network connection is not available.
12
Lack of resource
error
Produced and Consumed: Local resources are not available to
establish the exchange. Look in the PLC Fault Table for details.
14
Length error
Consumed only: The packet received did not match the length
expected.
18
Loss of Ethernet
interface error
Produced and Consumed: The Ethernet interface is not
communicating with the CPU. A loss of module or reset of module
PLC Fault Table entry may also be present. If the failure is transient in
nature, the status of the exchange may change at a later time. That
indicates subsequent transfers on the exchange were successful.
22
EGD not
supported
This error cannot occur with CPUE05.
26
No response
Produced and Consumed: Ethernet interface failed to establish
exchange.
28
Other error
Produced and Consumed: Error other than 12, 14, 18, or 26 when
establishing an exchange. Look in the PLC Fault Table for information.
30
Exchange deleted
Produced And Consumed: Exchange has been deleted and will no
longer be scanned.
Ethernet Communications
GFK-1503E User Manual 267
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